./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9 --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 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --- 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-6b4ec56 [2022-11-20 20:43:26,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:43:26,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:43:26,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:43:26,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:43:26,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:43:26,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:43:26,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:43:26,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:43:26,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:43:26,450 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:43:26,451 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:43:26,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:43:26,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:43:26,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:43:26,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:43:26,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:43:26,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:43:26,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:43:26,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:43:26,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:43:26,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:43:26,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:43:26,482 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:43:26,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:43:26,492 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:43:26,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:43:26,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:43:26,494 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:43:26,495 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:43:26,495 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:43:26,496 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:43:26,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:43:26,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:43:26,499 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:43:26,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:43:26,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:43:26,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:43:26,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:43:26,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:43:26,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:43:26,510 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:43:26,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:43:26,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:43:26,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:43:26,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:43:26,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:43:26,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:43:26,557 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:43:26,558 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:43:26,558 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:43:26,558 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:43:26,559 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:43:26,560 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:43:26,560 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:43:26,560 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:43:26,561 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:43:26,561 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:43:26,561 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:43:26,562 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:43:26,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:43:26,563 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:43:26,563 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:43:26,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:43:26,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:43:26,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:43:26,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:43:26,565 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:43:26,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:43:26,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:43:26,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:43:26,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:43:26,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:43:26,567 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:43:26,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:43:26,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:43:26,568 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:43:26,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:43:26,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:43:26,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:43:26,569 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_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed [2022-11-20 20:43:26,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:43:27,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:43:27,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:43:27,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:43:27,022 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:43:27,024 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-20 20:43:30,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:43:30,984 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:43:30,985 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2022-11-20 20:43:31,025 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/data/a1018bc10/9737d7daba5f47548d6fb9ae439c0115/FLAGed40f17eb [2022-11-20 20:43:31,043 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/data/a1018bc10/9737d7daba5f47548d6fb9ae439c0115 [2022-11-20 20:43:31,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:43:31,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:43:31,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:43:31,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:43:31,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:43:31,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:43:31" (1/1) ... [2022-11-20 20:43:31,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71571e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:31, skipping insertion in model container [2022-11-20 20:43:31,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:43:31" (1/1) ... [2022-11-20 20:43:31,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:43:31,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:43:31,598 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_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-20 20:43:31,608 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_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-20 20:43:32,452 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 20:43:32,540 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,541 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,542 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,543 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,545 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,560 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,561 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,564 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,565 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,567 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,569 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,572 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:32,573 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,035 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 20:43:33,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 20:43:33,038 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 20:43:33,039 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 20:43:33,041 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 20:43:33,042 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 20:43:33,043 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 20:43:33,044 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 20:43:33,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 20:43:33,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 20:43:33,297 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,306 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,376 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,377 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,379 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:43:33,424 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:43:33,440 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_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2022-11-20 20:43:33,441 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_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2022-11-20 20:43:33,509 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 20:43:33,548 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,548 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,549 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,549 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,550 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,575 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,576 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,577 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,578 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,579 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,580 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,580 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,581 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,660 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 20:43:33,661 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 20:43:33,662 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 20:43:33,663 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 20:43:33,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 20:43:33,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 20:43:33,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 20:43:33,674 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 20:43:33,675 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 20:43:33,676 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 20:43:33,736 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,745 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,793 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,796 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,797 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 20:43:33,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:43:34,315 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:43:34,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34 WrapperNode [2022-11-20 20:43:34,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:43:34,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:43:34,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:43:34,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:43:34,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,416 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,490 INFO L138 Inliner]: procedures = 691, calls = 1680, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 846 [2022-11-20 20:43:34,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:43:34,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:43:34,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:43:34,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:43:34,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,569 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:43:34,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:43:34,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:43:34,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:43:34,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (1/1) ... [2022-11-20 20:43:34,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:43:34,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:34,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:43:34,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:43:34,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:43:34,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-20 20:43:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-20 20:43:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-20 20:43:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-20 20:43:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-20 20:43:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-20 20:43:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-11-20 20:43:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-11-20 20:43:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:43:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 20:43:34,690 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 20:43:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 20:43:34,690 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 20:43:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 20:43:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:43:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 20:43:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-20 20:43:34,692 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-20 20:43:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:43:34,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:43:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 20:43:34,692 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 20:43:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-20 20:43:34,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-20 20:43:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 20:43:34,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 20:43:34,695 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-20 20:43:34,695 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-20 20:43:34,695 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-11-20 20:43:34,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-11-20 20:43:34,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-20 20:43:34,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-20 20:43:34,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 20:43:34,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 20:43:34,697 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-20 20:43:34,698 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-20 20:43:34,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-11-20 20:43:34,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-11-20 20:43:34,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:43:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-20 20:43:34,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-20 20:43:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 20:43:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 20:43:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-20 20:43:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-20 20:43:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 20:43:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 20:43:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-20 20:43:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-20 20:43:34,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:43:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-20 20:43:34,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-20 20:43:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2022-11-20 20:43:34,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2022-11-20 20:43:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:43:35,151 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:43:35,157 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:43:36,722 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:43:36,986 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:43:36,992 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 20:43:36,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:43:36 BoogieIcfgContainer [2022-11-20 20:43:36,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:43:37,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:43:37,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:43:37,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:43:37,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:43:31" (1/3) ... [2022-11-20 20:43:37,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc480df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:43:37, skipping insertion in model container [2022-11-20 20:43:37,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:43:34" (2/3) ... [2022-11-20 20:43:37,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc480df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:43:37, skipping insertion in model container [2022-11-20 20:43:37,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:43:36" (3/3) ... [2022-11-20 20:43:37,011 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2022-11-20 20:43:37,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:43:37,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:43:37,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:43:37,128 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;@3b1ce3b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:43:37,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:43:37,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 244 states, 127 states have (on average 1.204724409448819) internal successors, (153), 128 states have internal predecessors, (153), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-20 20:43:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 20:43:37,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:37,151 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:37,151 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:37,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:37,157 INFO L85 PathProgramCache]: Analyzing trace with hash -821114386, now seen corresponding path program 1 times [2022-11-20 20:43:37,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:37,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978683718] [2022-11-20 20:43:37,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:37,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-20 20:43:38,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:38,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978683718] [2022-11-20 20:43:38,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978683718] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:43:38,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156109428] [2022-11-20 20:43:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:38,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:38,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:38,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:43:38,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:43:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:39,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 20:43:39,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-11-20 20:43:39,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:39,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156109428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:39,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 20:43:39,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-20 20:43:39,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72908281] [2022-11-20 20:43:39,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:39,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:43:39,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:43:39,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:43:39,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:43:39,400 INFO L87 Difference]: Start difference. First operand has 244 states, 127 states have (on average 1.204724409448819) internal successors, (153), 128 states have internal predecessors, (153), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 20:43:40,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:40,165 INFO L93 Difference]: Finished difference Result 467 states and 689 transitions. [2022-11-20 20:43:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:43:40,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 114 [2022-11-20 20:43:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:40,184 INFO L225 Difference]: With dead ends: 467 [2022-11-20 20:43:40,184 INFO L226 Difference]: Without dead ends: 244 [2022-11-20 20:43:40,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:43:40,195 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 32 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:40,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1049 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 20:43:40,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-20 20:43:40,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-20 20:43:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 129 states have internal predecessors, (152), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2022-11-20 20:43:40,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 353 transitions. [2022-11-20 20:43:40,269 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 353 transitions. Word has length 114 [2022-11-20 20:43:40,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:40,270 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 353 transitions. [2022-11-20 20:43:40,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-20 20:43:40,271 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 353 transitions. [2022-11-20 20:43:40,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 20:43:40,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:40,275 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:40,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:43:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 20:43:40,486 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash -949916096, now seen corresponding path program 1 times [2022-11-20 20:43:40,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:40,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418432870] [2022-11-20 20:43:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:40,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:40,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:43:40,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1303063804] [2022-11-20 20:43:40,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:40,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:40,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:40,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:43:40,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:43:41,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:41,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 20:43:41,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:41,501 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-20 20:43:41,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:41,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:41,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418432870] [2022-11-20 20:43:41,502 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:43:41,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303063804] [2022-11-20 20:43:41,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303063804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:41,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:41,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 20:43:41,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828574913] [2022-11-20 20:43:41,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:41,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 20:43:41,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:43:41,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 20:43:41,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 20:43:41,506 INFO L87 Difference]: Start difference. First operand 244 states and 353 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 20:43:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:42,565 INFO L93 Difference]: Finished difference Result 445 states and 643 transitions. [2022-11-20 20:43:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 20:43:42,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 132 [2022-11-20 20:43:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:42,570 INFO L225 Difference]: With dead ends: 445 [2022-11-20 20:43:42,570 INFO L226 Difference]: Without dead ends: 244 [2022-11-20 20:43:42,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:43:42,573 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 127 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:42,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1409 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:43:42,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-11-20 20:43:42,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-11-20 20:43:42,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 127 states have (on average 1.1968503937007875) internal successors, (152), 129 states have internal predecessors, (152), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2022-11-20 20:43:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 349 transitions. [2022-11-20 20:43:42,605 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 349 transitions. Word has length 132 [2022-11-20 20:43:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:42,606 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 349 transitions. [2022-11-20 20:43:42,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-20 20:43:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 349 transitions. [2022-11-20 20:43:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-20 20:43:42,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:42,610 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:42,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:43:42,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:42,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:42,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1708083302, now seen corresponding path program 2 times [2022-11-20 20:43:42,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:42,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563514488] [2022-11-20 20:43:42,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:42,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:42,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:43:42,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520202449] [2022-11-20 20:43:42,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:43:42,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:42,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:42,981 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:43:43,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 20:43:43,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-20 20:43:43,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:43:43,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 20:43:43,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-20 20:43:43,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:43,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:43,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563514488] [2022-11-20 20:43:43,636 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:43:43,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520202449] [2022-11-20 20:43:43,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520202449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:43,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:43,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:43:43,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677399041] [2022-11-20 20:43:43,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:43:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:43:43,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:43:43,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:43:43,640 INFO L87 Difference]: Start difference. First operand 244 states and 349 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 20:43:43,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:43,997 INFO L93 Difference]: Finished difference Result 427 states and 602 transitions. [2022-11-20 20:43:43,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:43:43,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 141 [2022-11-20 20:43:43,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:44,002 INFO L225 Difference]: With dead ends: 427 [2022-11-20 20:43:44,002 INFO L226 Difference]: Without dead ends: 248 [2022-11-20 20:43:44,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 20:43:44,005 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:44,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1229 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 20:43:44,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-20 20:43:44,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-20 20:43:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2022-11-20 20:43:44,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 354 transitions. [2022-11-20 20:43:44,060 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 354 transitions. Word has length 141 [2022-11-20 20:43:44,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:44,062 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 354 transitions. [2022-11-20 20:43:44,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2022-11-20 20:43:44,063 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 354 transitions. [2022-11-20 20:43:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-20 20:43:44,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:44,073 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:44,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:43:44,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:44,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:44,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:44,284 INFO L85 PathProgramCache]: Analyzing trace with hash -188427751, now seen corresponding path program 1 times [2022-11-20 20:43:44,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:44,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208952125] [2022-11-20 20:43:44,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:44,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:44,419 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:43:44,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854933624] [2022-11-20 20:43:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:44,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:44,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:44,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:43:44,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:43:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:45,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 2804 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:43:45,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-20 20:43:45,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:45,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:45,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208952125] [2022-11-20 20:43:45,336 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:43:45,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854933624] [2022-11-20 20:43:45,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854933624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:45,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:45,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 20:43:45,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382360619] [2022-11-20 20:43:45,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:45,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 20:43:45,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:43:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 20:43:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 20:43:45,340 INFO L87 Difference]: Start difference. First operand 248 states and 354 transitions. Second operand has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 20:43:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:46,272 INFO L93 Difference]: Finished difference Result 448 states and 637 transitions. [2022-11-20 20:43:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:43:46,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 145 [2022-11-20 20:43:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:46,275 INFO L225 Difference]: With dead ends: 448 [2022-11-20 20:43:46,276 INFO L226 Difference]: Without dead ends: 248 [2022-11-20 20:43:46,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 20:43:46,278 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 175 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:46,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1551 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-20 20:43:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-20 20:43:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-20 20:43:46,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2022-11-20 20:43:46,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 348 transitions. [2022-11-20 20:43:46,333 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 348 transitions. Word has length 145 [2022-11-20 20:43:46,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:46,334 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 348 transitions. [2022-11-20 20:43:46,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 20:43:46,334 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 348 transitions. [2022-11-20 20:43:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-20 20:43:46,337 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:46,337 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:46,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:43:46,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:46,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:46,550 INFO L85 PathProgramCache]: Analyzing trace with hash 74652997, now seen corresponding path program 2 times [2022-11-20 20:43:46,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:46,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798794241] [2022-11-20 20:43:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:46,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:46,681 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:43:46,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988652541] [2022-11-20 20:43:46,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:43:46,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:46,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:46,683 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:43:46,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 20:43:47,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-20 20:43:47,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:43:47,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 1986 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:43:47,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-20 20:43:47,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:47,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:47,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798794241] [2022-11-20 20:43:47,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:43:47,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988652541] [2022-11-20 20:43:47,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988652541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:47,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:47,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 20:43:47,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984517428] [2022-11-20 20:43:47,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:47,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 20:43:47,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:43:47,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 20:43:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:43:47,528 INFO L87 Difference]: Start difference. First operand 248 states and 348 transitions. Second operand has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 20:43:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:48,085 INFO L93 Difference]: Finished difference Result 445 states and 620 transitions. [2022-11-20 20:43:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:43:48,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 154 [2022-11-20 20:43:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:48,090 INFO L225 Difference]: With dead ends: 445 [2022-11-20 20:43:48,090 INFO L226 Difference]: Without dead ends: 248 [2022-11-20 20:43:48,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:43:48,098 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 0 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:48,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1118 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 20:43:48,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-20 20:43:48,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-20 20:43:48,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (99), 93 states have call predecessors, (99), 92 states have call successors, (99) [2022-11-20 20:43:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 347 transitions. [2022-11-20 20:43:48,150 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 347 transitions. Word has length 154 [2022-11-20 20:43:48,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:48,152 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 347 transitions. [2022-11-20 20:43:48,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-11-20 20:43:48,153 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 347 transitions. [2022-11-20 20:43:48,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-20 20:43:48,157 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:48,158 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:48,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 20:43:48,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:48,358 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:48,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:48,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1276385801, now seen corresponding path program 3 times [2022-11-20 20:43:48,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:48,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129717887] [2022-11-20 20:43:48,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:48,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:48,474 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:43:48,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6788247] [2022-11-20 20:43:48,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 20:43:48,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:48,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:48,476 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:43:48,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 20:43:49,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 20:43:49,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:43:49,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 20:43:49,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:49,585 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-20 20:43:49,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:43:49,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:49,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129717887] [2022-11-20 20:43:49,586 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:43:49,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6788247] [2022-11-20 20:43:49,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6788247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:43:49,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:43:49,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 20:43:49,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897552595] [2022-11-20 20:43:49,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:43:49,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 20:43:49,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:43:49,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 20:43:49,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-20 20:43:49,589 INFO L87 Difference]: Start difference. First operand 248 states and 347 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 20:43:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:43:50,674 INFO L93 Difference]: Finished difference Result 432 states and 594 transitions. [2022-11-20 20:43:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:43:50,676 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 163 [2022-11-20 20:43:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:43:50,678 INFO L225 Difference]: With dead ends: 432 [2022-11-20 20:43:50,678 INFO L226 Difference]: Without dead ends: 248 [2022-11-20 20:43:50,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-11-20 20:43:50,680 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 220 mSDsluCounter, 1449 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:43:50,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1720 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 20:43:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-11-20 20:43:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2022-11-20 20:43:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 132 states have internal predecessors, (155), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2022-11-20 20:43:50,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 344 transitions. [2022-11-20 20:43:50,713 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 344 transitions. Word has length 163 [2022-11-20 20:43:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:43:50,715 INFO L495 AbstractCegarLoop]: Abstraction has 248 states and 344 transitions. [2022-11-20 20:43:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-20 20:43:50,716 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 344 transitions. [2022-11-20 20:43:50,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 20:43:50,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:43:50,720 INFO L195 NwaCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:43:50,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:43:50,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:50,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:43:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:43:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1561834877, now seen corresponding path program 1 times [2022-11-20 20:43:50,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:43:50,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897526264] [2022-11-20 20:43:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:50,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:43:51,079 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 20:43:51,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1988013083] [2022-11-20 20:43:51,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:43:51,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:43:51,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:43:51,088 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:43:51,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0756869d-fe7f-4eb1-b964-f9ac1c93f5cf/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:43:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:43:51,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 3200 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 20:43:51,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:43:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-11-20 20:43:52,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:43:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-11-20 20:43:52,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:43:52,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897526264] [2022-11-20 20:43:52,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 20:43:52,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988013083] [2022-11-20 20:43:52,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988013083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:43:52,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [30998123] [2022-11-20 20:43:52,929 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2022-11-20 20:43:52,929 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:43:52,934 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:43:52,940 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:43:52,940 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:43:57,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:43:57,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:43:57,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:43:57,940 INFO L217 Elim1Store]: Index analysis took 527 ms [2022-11-20 20:44:29,038 WARN L233 SmtUtils]: Spent 31.00s on a formula simplification. DAG size of input: 2128 DAG size of output: 1161 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-20 20:44:29,048 INFO L321 Elim1Store]: treesize reduction 3474, result has 33.3 percent of original size [2022-11-20 20:44:29,053 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 198 select indices, 198 select index equivalence classes, 19310 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 386 case distinctions, treesize of input 997 treesize of output 2357 [2022-11-20 20:44:32,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:44:32,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:44:32,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:44:32,849 INFO L217 Elim1Store]: Index analysis took 119 ms [2022-11-20 20:44:32,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 196 select indices, 196 select index equivalence classes, 19307 disjoint index pairs (out of 19110 index pairs), introduced 196 new quantified variables, introduced 0 case distinctions, treesize of input 987 treesize of output 1574 [2022-11-20 20:45:40,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:40,140 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 44 treesize of output 43 [2022-11-20 20:45:40,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:40,160 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 44 treesize of output 43 [2022-11-20 20:45:40,168 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 15 treesize of output 1 [2022-11-20 20:45:40,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:40,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:40,179 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 38 treesize of output 29 [2022-11-20 20:45:43,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:44,017 INFO L217 Elim1Store]: Index analysis took 114 ms [2022-11-20 20:45:44,106 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:45:44,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 198 select indices, 198 select index equivalence classes, 19501 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 2 case distinctions, treesize of input 991 treesize of output 595 [2022-11-20 20:45:44,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:44,894 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:45:44,900 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 197 select indices, 197 select index equivalence classes, 19305 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 2 case distinctions, treesize of input 986 treesize of output 592 [2022-11-20 20:45:45,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:45:45,409 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 55 select indices, 55 select index equivalence classes, 1245 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 4 case distinctions, treesize of input 644 treesize of output 304 [2022-11-20 20:45:45,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:45,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,050 INFO L217 Elim1Store]: Index analysis took 169 ms [2022-11-20 20:45:46,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,067 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:45:46,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,085 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:45:46,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,151 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:45:46,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 195 select indices, 195 select index equivalence classes, 17054 disjoint index pairs (out of 18915 index pairs), introduced 195 new quantified variables, introduced 18 case distinctions, treesize of input 1752 treesize of output 586 [2022-11-20 20:45:46,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,857 INFO L217 Elim1Store]: Index analysis took 149 ms [2022-11-20 20:45:46,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,869 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:45:46,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,878 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:45:46,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:46,966 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 20:45:46,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 195 select indices, 195 select index equivalence classes, 17054 disjoint index pairs (out of 18915 index pairs), introduced 195 new quantified variables, introduced 18 case distinctions, treesize of input 1752 treesize of output 594 [2022-11-20 20:45:56,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:56,737 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:45:56,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 198 select indices, 198 select index equivalence classes, 19501 disjoint index pairs (out of 19503 index pairs), introduced 198 new quantified variables, introduced 2 case distinctions, treesize of input 991 treesize of output 595 [2022-11-20 20:45:57,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,392 INFO L217 Elim1Store]: Index analysis took 122 ms [2022-11-20 20:45:57,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:45:57,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:45:57,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,481 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:45:57,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 195 select indices, 195 select index equivalence classes, 17054 disjoint index pairs (out of 18915 index pairs), introduced 195 new quantified variables, introduced 18 case distinctions, treesize of input 1752 treesize of output 586 [2022-11-20 20:45:57,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:57,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,101 INFO L217 Elim1Store]: Index analysis took 112 ms [2022-11-20 20:45:58,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,111 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:45:58,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,117 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:45:58,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,192 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-20 20:45:58,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 195 select indices, 195 select index equivalence classes, 17054 disjoint index pairs (out of 18915 index pairs), introduced 195 new quantified variables, introduced 18 case distinctions, treesize of input 1752 treesize of output 594 [2022-11-20 20:45:58,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 55 select indices, 55 select index equivalence classes, 1243 disjoint index pairs (out of 1485 index pairs), introduced 55 new quantified variables, introduced 0 case distinctions, treesize of input 644 treesize of output 304 [2022-11-20 20:45:58,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:45:58,937 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 197 select indices, 197 select index equivalence classes, 19309 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 986 treesize of output 592 [2022-11-20 20:46:00,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-20 20:46:00,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 20:46:00,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 20:46:00,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-20 20:46:00,225 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 13 treesize of output 9 [2022-11-20 20:46:00,232 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 15 treesize of output 1 [2022-11-20 20:46:00,241 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 15 treesize of output 1 [2022-11-20 20:46:00,253 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 15 treesize of output 1 [2022-11-20 20:46:00,313 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:46:00,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2022-11-20 20:46:00,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-11-20 20:46:00,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-11-20 20:46:00,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-11-20 20:46:00,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-11-20 20:46:00,430 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:46:00,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2022-11-20 20:46:00,490 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 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 20:46:01,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-20 20:46:01,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:01,106 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-20 20:46:01,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:01,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2022-11-20 20:46:02,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-20 20:46:03,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:03,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 30 [2022-11-20 20:46:03,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:03,487 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 197 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 24 [2022-11-20 20:46:04,496 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 20:46:04,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-20 20:46:04,562 INFO L321 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-11-20 20:46:04,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 21 [2022-11-20 20:46:04,845 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:04,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:04,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:04,847 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:04,855 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:46:04,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 81 treesize of output 33 [2022-11-20 20:46:04,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-20 20:46:04,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:04,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:04,911 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:04,919 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:46:04,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 38 [2022-11-20 20:46:04,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:04,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:04,937 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:04,944 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:46:04,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 32 [2022-11-20 20:46:04,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-20 20:46:05,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-20 20:46:05,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:05,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:05,249 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:05,258 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:46:05,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 38 [2022-11-20 20:46:05,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:05,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:05,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:05,284 INFO L321 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-11-20 20:46:05,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 64 treesize of output 32 [2022-11-20 20:46:05,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 11 treesize of output 7 [2022-11-20 20:46:05,324 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:05,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:05,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:05,327 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 20:46:05,336 INFO L321 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2022-11-20 20:46:05,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 81 treesize of output 33 [2022-11-20 20:46:23,468 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_valid with input of size 47 for LOIs [2022-11-20 20:46:23,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 9 [2022-11-20 20:46:23,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-20 20:46:23,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-11-20 20:46:23,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-11-20 20:46:23,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:23,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:23,595 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:46:23,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 20:46:23,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:23,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:46:23,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 20:46:23,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 10 [2022-11-20 20:46:23,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-11-20 20:46:23,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 5 treesize of output 3 [2022-11-20 20:46:24,028 INFO L321 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2022-11-20 20:46:24,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 180 treesize of output 197 [2022-11-20 20:46:24,650 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 94 for LOIs [2022-11-20 20:46:24,988 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 80 for LOIs [2022-11-20 20:46:25,014 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 2819 for LOIs [2022-11-20 20:46:28,341 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 2869 for LOIs [2022-11-20 20:48:11,710 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 2864 for LOIs [2022-11-20 20:48:17,982 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 70 for LOIs [2022-11-20 20:48:17,989 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_malloc with input of size 88 for LOIs [2022-11-20 20:48:18,121 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_bool with input of size 82 for LOIs [2022-11-20 20:48:18,135 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:50:06,518 WARN L233 SmtUtils]: Spent 1.79m on a formula simplification. DAG size of input: 2815 DAG size of output: 2431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:52:45,527 WARN L233 SmtUtils]: Spent 2.63m on a formula simplification. DAG size of input: 2819 DAG size of output: 2435 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 20:56:01,669 WARN L233 SmtUtils]: Spent 3.24m on a formula simplification. DAG size of input: 2861 DAG size of output: 2477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)