./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7 --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 ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:09:44,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:09:44,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:09:44,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:09:44,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:09:44,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:09:44,294 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:09:44,298 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:09:44,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:09:44,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:09:44,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:09:44,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:09:44,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:09:44,311 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:09:44,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:09:44,317 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:09:44,318 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:09:44,319 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:09:44,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:09:44,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:09:44,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:09:44,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:09:44,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:09:44,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:09:44,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:09:44,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:09:44,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:09:44,346 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:09:44,347 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:09:44,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:09:44,349 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:09:44,350 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:09:44,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:09:44,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:09:44,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:09:44,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:09:44,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:09:44,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:09:44,357 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:09:44,358 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:09:44,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:09:44,360 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 19:09:44,416 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:09:44,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:09:44,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:09:44,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:09:44,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:09:44,419 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:09:44,419 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:09:44,419 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:09:44,420 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:09:44,420 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:09:44,421 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:09:44,422 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:09:44,422 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:09:44,422 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:09:44,423 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:09:44,423 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:09:44,423 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:09:44,423 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:09:44,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:09:44,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:09:44,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:09:44,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:09:44,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:09:44,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:09:44,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:09:44,426 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:09:44,428 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:09:44,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:09:44,429 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:09:44,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:09:44,429 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:09:44,430 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:09:44,430 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:09:44,430 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:09:44,430 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:09:44,431 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:09:44,431 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:09:44,431 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:09:44,431 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba6eb72b2235d93ac0dcdd3f0e672793184c4cf65112c581319750a174c5bca8 [2021-11-25 19:09:44,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:09:44,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:09:44,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:09:44,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:09:44,731 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:09:44,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-25 19:09:44,829 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/data/dfbde3cb6/ef27cc30aa8d4ec9a4b02f2e6f185e5f/FLAGce5377f44 [2021-11-25 19:09:45,734 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:09:45,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i [2021-11-25 19:09:45,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/data/dfbde3cb6/ef27cc30aa8d4ec9a4b02f2e6f185e5f/FLAGce5377f44 [2021-11-25 19:09:46,186 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/data/dfbde3cb6/ef27cc30aa8d4ec9a4b02f2e6f185e5f [2021-11-25 19:09:46,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:09:46,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:09:46,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:09:46,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:09:46,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:09:46,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:09:46" (1/1) ... [2021-11-25 19:09:46,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f205fe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:46, skipping insertion in model container [2021-11-25 19:09:46,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:09:46" (1/1) ... [2021-11-25 19:09:46,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:09:46,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:09:46,674 WARN L230 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_01f85db0-064b-479e-bb20-7d97ed6f0a23/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-25 19:09:46,683 WARN L230 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_01f85db0-064b-479e-bb20-7d97ed6f0a23/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-25 19:09:47,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,928 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,929 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,944 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,945 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,947 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,948 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,950 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,951 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:47,952 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:48,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:09:48,486 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:09:48,488 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:09:48,489 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:09:48,491 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:09:48,492 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:09:48,493 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:09:48,494 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:09:48,495 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:09:48,496 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:09:48,781 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:09:49,329 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,342 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,376 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,382 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,390 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,422 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,423 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,424 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,424 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:09:49,542 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:09:49,570 WARN L230 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_01f85db0-064b-479e-bb20-7d97ed6f0a23/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4493,4506] [2021-11-25 19:09:49,571 WARN L230 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_01f85db0-064b-479e-bb20-7d97ed6f0a23/sv-benchmarks/c/aws-c-common/aws_hash_table_move_harness.i[4553,4566] [2021-11-25 19:09:49,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,632 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,633 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,634 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,644 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,644 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,646 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,650 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,651 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,696 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 19:09:49,697 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 19:09:49,698 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 19:09:49,699 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 19:09:49,700 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 19:09:49,701 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 19:09:49,701 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 19:09:49,702 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 19:09:49,702 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 19:09:49,703 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 19:09:49,737 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 19:09:49,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,921 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,922 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,926 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,942 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,943 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,943 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 19:09:49,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:09:50,254 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:09:50,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50 WrapperNode [2021-11-25 19:09:50,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:09:50,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:09:50,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:09:50,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:09:50,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,492 INFO L137 Inliner]: procedures = 774, calls = 2432, calls flagged for inlining = 69, calls inlined = 12, statements flattened = 622 [2021-11-25 19:09:50,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:09:50,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:09:50,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:09:50,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:09:50,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:09:50,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:09:50,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:09:50,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:09:50,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (1/1) ... [2021-11-25 19:09:50,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:09:50,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:50,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:09:50,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:09:50,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-25 19:09:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:09:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-25 19:09:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-25 19:09:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:09:50,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:09:50,707 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-25 19:09:50,708 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-25 19:09:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 19:09:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:09:50,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 19:09:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:09:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:09:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 19:09:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 19:09:50,709 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-25 19:09:50,709 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-25 19:09:50,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 19:09:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 19:09:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:09:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-25 19:09:50,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-25 19:09:50,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 19:09:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-25 19:09:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-25 19:09:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:09:50,712 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-25 19:09:50,712 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-25 19:09:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:09:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-25 19:09:50,713 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-25 19:09:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:09:50,714 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:09:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-25 19:09:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-25 19:09:50,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 19:09:50,718 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-25 19:09:50,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-25 19:09:50,719 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-25 19:09:50,719 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-25 19:09:50,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:09:51,178 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:09:51,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:09:52,142 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:09:52,262 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:09:52,266 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-25 19:09:52,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:09:52 BoogieIcfgContainer [2021-11-25 19:09:52,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:09:52,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:09:52,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:09:52,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:09:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:09:46" (1/3) ... [2021-11-25 19:09:52,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad1087c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:09:52, skipping insertion in model container [2021-11-25 19:09:52,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:09:50" (2/3) ... [2021-11-25 19:09:52,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ad1087c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:09:52, skipping insertion in model container [2021-11-25 19:09:52,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:09:52" (3/3) ... [2021-11-25 19:09:52,283 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_move_harness.i [2021-11-25 19:09:52,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:09:52,291 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:09:52,355 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:09:52,374 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:09:52,375 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:09:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-25 19:09:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-25 19:09:52,418 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:52,419 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:52,420 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:52,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:52,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1806303517, now seen corresponding path program 1 times [2021-11-25 19:09:52,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:52,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880168936] [2021-11-25 19:09:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:52,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:52,843 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:09:52,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279969437] [2021-11-25 19:09:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:52,845 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:52,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:52,847 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:52,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:09:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:53,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:09:53,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2021-11-25 19:09:53,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:53,867 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:53,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880168936] [2021-11-25 19:09:53,868 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:09:53,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279969437] [2021-11-25 19:09:53,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279969437] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:53,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:53,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:09:53,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558383200] [2021-11-25 19:09:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:53,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:09:53,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:53,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:09:53,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:09:53,923 INFO L87 Difference]: Start difference. First operand has 101 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:09:54,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:54,239 INFO L93 Difference]: Finished difference Result 136 states and 174 transitions. [2021-11-25 19:09:54,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:09:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 100 [2021-11-25 19:09:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:54,254 INFO L225 Difference]: With dead ends: 136 [2021-11-25 19:09:54,254 INFO L226 Difference]: Without dead ends: 99 [2021-11-25 19:09:54,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:09:54,262 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:54,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 19:09:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-25 19:09:54,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-25 19:09:54,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 53 states have internal predecessors, (60), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-25 19:09:54,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 123 transitions. [2021-11-25 19:09:54,320 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 123 transitions. Word has length 100 [2021-11-25 19:09:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:54,322 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 123 transitions. [2021-11-25 19:09:54,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-25 19:09:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 123 transitions. [2021-11-25 19:09:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-25 19:09:54,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:54,329 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:54,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:54,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 19:09:54,555 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:54,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:54,556 INFO L85 PathProgramCache]: Analyzing trace with hash 493483735, now seen corresponding path program 1 times [2021-11-25 19:09:54,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:54,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330362744] [2021-11-25 19:09:54,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:54,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:54,748 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:09:54,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405663976] [2021-11-25 19:09:54,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:54,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:54,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:54,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:54,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:09:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:55,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 2419 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 19:09:55,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-11-25 19:09:55,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:09:55,734 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330362744] [2021-11-25 19:09:55,734 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:09:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405663976] [2021-11-25 19:09:55,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405663976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:09:55,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:09:55,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:09:55,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778604253] [2021-11-25 19:09:55,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:09:55,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:09:55,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:09:55,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:09:55,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:09:55,739 INFO L87 Difference]: Start difference. First operand 99 states and 123 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:09:57,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:09:57,390 INFO L93 Difference]: Finished difference Result 192 states and 239 transitions. [2021-11-25 19:09:57,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:09:57,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 105 [2021-11-25 19:09:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:09:57,393 INFO L225 Difference]: With dead ends: 192 [2021-11-25 19:09:57,393 INFO L226 Difference]: Without dead ends: 103 [2021-11-25 19:09:57,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:09:57,396 INFO L933 BasicCegarLoop]: 103 mSDtfsCounter, 1 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-25 19:09:57,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 408 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-25 19:09:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-25 19:09:57,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-11-25 19:09:57,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 56 states have internal predecessors, (63), 32 states have call successors, (32), 14 states have call predecessors, (32), 15 states have return successors, (32), 32 states have call predecessors, (32), 31 states have call successors, (32) [2021-11-25 19:09:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2021-11-25 19:09:57,416 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 105 [2021-11-25 19:09:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:09:57,417 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-11-25 19:09:57,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 19:09:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2021-11-25 19:09:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 19:09:57,421 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:09:57,421 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:09:57,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:09:57,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:57,647 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:09:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:09:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash -774970137, now seen corresponding path program 1 times [2021-11-25 19:09:57,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:09:57,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978164290] [2021-11-25 19:09:57,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:57,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:09:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:58,215 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-25 19:09:58,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:09:58,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978164290] [2021-11-25 19:09:58,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978164290] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:09:58,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133756117] [2021-11-25 19:09:58,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:09:58,217 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:09:58,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:09:58,218 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:09:58,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:09:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:09:58,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-25 19:09:58,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:09:59,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-11-25 19:10:00,475 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:10:00,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-11-25 19:10:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-25 19:10:01,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:01,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133756117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:01,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:10:01,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8] total 18 [2021-11-25 19:10:01,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708217864] [2021-11-25 19:10:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:01,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 19:10:01,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:10:01,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 19:10:01,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:10:01,337 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 7 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-25 19:10:02,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 19:10:04,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:04,115 INFO L93 Difference]: Finished difference Result 165 states and 211 transitions. [2021-11-25 19:10:04,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 19:10:04,116 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 7 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 6 states have call successors, (25) Word has length 113 [2021-11-25 19:10:04,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:04,121 INFO L225 Difference]: With dead ends: 165 [2021-11-25 19:10:04,121 INFO L226 Difference]: Without dead ends: 137 [2021-11-25 19:10:04,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 91 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:10:04,124 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 33 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:04,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 672 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 401 Invalid, 0 Unknown, 319 Unchecked, 2.5s Time] [2021-11-25 19:10:04,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-25 19:10:04,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2021-11-25 19:10:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 77 states have internal predecessors, (84), 41 states have call successors, (41), 17 states have call predecessors, (41), 21 states have return successors, (52), 41 states have call predecessors, (52), 40 states have call successors, (52) [2021-11-25 19:10:04,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 177 transitions. [2021-11-25 19:10:04,151 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 177 transitions. Word has length 113 [2021-11-25 19:10:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:04,152 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 177 transitions. [2021-11-25 19:10:04,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.083333333333333) internal successors, (49), 11 states have internal predecessors, (49), 7 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (25), 8 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-25 19:10:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 177 transitions. [2021-11-25 19:10:04,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-25 19:10:04,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:04,157 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:04,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:04,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:04,379 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:10:04,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1118098027, now seen corresponding path program 1 times [2021-11-25 19:10:04,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:10:04,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210096292] [2021-11-25 19:10:04,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:04,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:10:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:04,818 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 19:10:04,818 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:10:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210096292] [2021-11-25 19:10:04,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210096292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:10:04,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925517292] [2021-11-25 19:10:04,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:04,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:04,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:10:04,821 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:10:04,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:10:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:05,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 2444 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-25 19:10:05,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:05,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-11-25 19:10:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-25 19:10:07,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:07,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925517292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:07,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:10:07,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8] total 16 [2021-11-25 19:10:07,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606135003] [2021-11-25 19:10:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:07,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:10:07,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:10:07,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:10:07,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-11-25 19:10:07,037 INFO L87 Difference]: Start difference. First operand 136 states and 177 transitions. Second operand has 11 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 4 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-25 19:10:09,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:09,195 INFO L93 Difference]: Finished difference Result 229 states and 308 transitions. [2021-11-25 19:10:09,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 19:10:09,196 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 4 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) Word has length 114 [2021-11-25 19:10:09,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:09,208 INFO L225 Difference]: With dead ends: 229 [2021-11-25 19:10:09,211 INFO L226 Difference]: Without dead ends: 183 [2021-11-25 19:10:09,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 96 SyntacticMatches, 12 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:10:09,215 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 46 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:09,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 397 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 235 Invalid, 0 Unknown, 131 Unchecked, 2.1s Time] [2021-11-25 19:10:09,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-25 19:10:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 154. [2021-11-25 19:10:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 82 states have (on average 1.1585365853658536) internal successors, (95), 86 states have internal predecessors, (95), 48 states have call successors, (48), 19 states have call predecessors, (48), 23 states have return successors, (60), 48 states have call predecessors, (60), 47 states have call successors, (60) [2021-11-25 19:10:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 203 transitions. [2021-11-25 19:10:09,253 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 203 transitions. Word has length 114 [2021-11-25 19:10:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:09,254 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 203 transitions. [2021-11-25 19:10:09,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 6 states have call successors, (26), 4 states have call predecessors, (26), 6 states have return successors, (25), 7 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-25 19:10:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 203 transitions. [2021-11-25 19:10:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 19:10:09,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:09,259 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 3, 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] [2021-11-25 19:10:09,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:09,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:09,475 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:10:09,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:09,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1727892621, now seen corresponding path program 1 times [2021-11-25 19:10:09,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:10:09,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840981664] [2021-11-25 19:10:09,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:09,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:10:09,589 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:10:09,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107744923] [2021-11-25 19:10:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:09,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:09,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:10:09,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:10:09,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:10:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:10,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-25 19:10:10,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:10,402 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-25 19:10:10,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:10,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:10:10,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840981664] [2021-11-25 19:10:10,403 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:10:10,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107744923] [2021-11-25 19:10:10,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107744923] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:10,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:10:10,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:10:10,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405588860] [2021-11-25 19:10:10,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:10,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:10:10,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:10:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:10:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:10:10,408 INFO L87 Difference]: Start difference. First operand 154 states and 203 transitions. Second operand has 6 states, 3 states have (on average 18.333333333333332) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:10:12,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:12,286 INFO L93 Difference]: Finished difference Result 260 states and 330 transitions. [2021-11-25 19:10:12,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:10:12,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 3 states have (on average 18.333333333333332) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 118 [2021-11-25 19:10:12,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:12,289 INFO L225 Difference]: With dead ends: 260 [2021-11-25 19:10:12,289 INFO L226 Difference]: Without dead ends: 138 [2021-11-25 19:10:12,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:10:12,291 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:12,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 460 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-25 19:10:12,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-25 19:10:12,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2021-11-25 19:10:12,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 73 states have (on average 1.1506849315068493) internal successors, (84), 77 states have internal predecessors, (84), 41 states have call successors, (41), 17 states have call predecessors, (41), 21 states have return successors, (51), 41 states have call predecessors, (51), 40 states have call successors, (51) [2021-11-25 19:10:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 176 transitions. [2021-11-25 19:10:12,325 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 176 transitions. Word has length 118 [2021-11-25 19:10:12,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:12,326 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 176 transitions. [2021-11-25 19:10:12,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 3 states have (on average 18.333333333333332) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-25 19:10:12,327 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 176 transitions. [2021-11-25 19:10:12,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-25 19:10:12,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:12,335 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:12,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:12,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:12,563 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:10:12,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:12,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1799934692, now seen corresponding path program 1 times [2021-11-25 19:10:12,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:10:12,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389863905] [2021-11-25 19:10:12,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:12,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:10:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:12,916 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-25 19:10:12,917 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:10:12,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389863905] [2021-11-25 19:10:12,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389863905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:10:12,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792530894] [2021-11-25 19:10:12,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:12,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:12,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:10:12,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:10:12,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:10:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:13,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2468 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 19:10:13,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:13,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-11-25 19:10:14,042 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-25 19:10:14,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:14,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792530894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:14,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:10:14,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2021-11-25 19:10:14,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889437558] [2021-11-25 19:10:14,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:14,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:10:14,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:10:14,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:10:14,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-25 19:10:14,046 INFO L87 Difference]: Start difference. First operand 136 states and 176 transitions. Second operand has 12 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-25 19:10:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:14,798 INFO L93 Difference]: Finished difference Result 262 states and 336 transitions. [2021-11-25 19:10:14,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:10:14,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 120 [2021-11-25 19:10:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:14,800 INFO L225 Difference]: With dead ends: 262 [2021-11-25 19:10:14,801 INFO L226 Difference]: Without dead ends: 141 [2021-11-25 19:10:14,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-25 19:10:14,802 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 15 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:14,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 388 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 42 Unchecked, 0.7s Time] [2021-11-25 19:10:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-25 19:10:14,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-25 19:10:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 80 states have internal predecessors, (88), 42 states have call successors, (42), 19 states have call predecessors, (42), 21 states have return successors, (52), 41 states have call predecessors, (52), 41 states have call successors, (52) [2021-11-25 19:10:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 182 transitions. [2021-11-25 19:10:14,820 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 182 transitions. Word has length 120 [2021-11-25 19:10:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:14,820 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 182 transitions. [2021-11-25 19:10:14,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.222222222222222) internal successors, (56), 10 states have internal predecessors, (56), 5 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-25 19:10:14,821 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 182 transitions. [2021-11-25 19:10:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-25 19:10:14,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:14,823 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:14,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 19:10:15,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:15,039 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:10:15,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:15,039 INFO L85 PathProgramCache]: Analyzing trace with hash 943726446, now seen corresponding path program 1 times [2021-11-25 19:10:15,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:10:15,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215206610] [2021-11-25 19:10:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:15,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:10:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 9 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-25 19:10:15,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:10:15,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215206610] [2021-11-25 19:10:15,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215206610] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:10:15,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446719211] [2021-11-25 19:10:15,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:15,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:15,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:10:15,577 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:10:15,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:10:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:16,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2497 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-25 19:10:16,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:16,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-11-25 19:10:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-25 19:10:17,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:10:17,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446719211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:17,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:10:17,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2021-11-25 19:10:17,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976911549] [2021-11-25 19:10:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:17,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 19:10:17,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:10:17,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 19:10:17,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2021-11-25 19:10:17,760 INFO L87 Difference]: Start difference. First operand 141 states and 182 transitions. Second operand has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 7 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2021-11-25 19:10:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:19,256 INFO L93 Difference]: Finished difference Result 206 states and 254 transitions. [2021-11-25 19:10:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 19:10:19,256 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 7 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) Word has length 124 [2021-11-25 19:10:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:19,258 INFO L225 Difference]: With dead ends: 206 [2021-11-25 19:10:19,258 INFO L226 Difference]: Without dead ends: 158 [2021-11-25 19:10:19,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 109 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:10:19,260 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 30 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:19,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 555 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 303 Invalid, 0 Unknown, 277 Unchecked, 1.4s Time] [2021-11-25 19:10:19,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-25 19:10:19,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2021-11-25 19:10:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 84 states have (on average 1.130952380952381) internal successors, (95), 87 states have internal predecessors, (95), 44 states have call successors, (44), 22 states have call predecessors, (44), 24 states have return successors, (53), 43 states have call predecessors, (53), 43 states have call successors, (53) [2021-11-25 19:10:19,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 192 transitions. [2021-11-25 19:10:19,277 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 192 transitions. Word has length 124 [2021-11-25 19:10:19,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:19,278 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 192 transitions. [2021-11-25 19:10:19,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 10 states have internal predecessors, (60), 7 states have call successors, (28), 4 states have call predecessors, (28), 6 states have return successors, (27), 8 states have call predecessors, (27), 7 states have call successors, (27) [2021-11-25 19:10:19,279 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 192 transitions. [2021-11-25 19:10:19,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-25 19:10:19,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:19,281 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:19,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-25 19:10:19,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:19,502 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:10:19,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:19,503 INFO L85 PathProgramCache]: Analyzing trace with hash -486689826, now seen corresponding path program 1 times [2021-11-25 19:10:19,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:10:19,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648160544] [2021-11-25 19:10:19,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:19,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:10:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:19,807 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-11-25 19:10:19,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:10:19,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648160544] [2021-11-25 19:10:19,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648160544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:10:19,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:10:19,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:10:19,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088532153] [2021-11-25 19:10:19,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:10:19,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:10:19,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:10:19,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:10:19,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:10:19,811 INFO L87 Difference]: Start difference. First operand 153 states and 192 transitions. Second operand has 7 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:10:22,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:10:22,256 INFO L93 Difference]: Finished difference Result 294 states and 369 transitions. [2021-11-25 19:10:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:10:22,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) Word has length 132 [2021-11-25 19:10:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:10:22,258 INFO L225 Difference]: With dead ends: 294 [2021-11-25 19:10:22,258 INFO L226 Difference]: Without dead ends: 151 [2021-11-25 19:10:22,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:10:22,259 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 1 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:10:22,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 617 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-25 19:10:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-25 19:10:22,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2021-11-25 19:10:22,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 82 states have (on average 1.1219512195121952) internal successors, (92), 84 states have internal predecessors, (92), 43 states have call successors, (43), 22 states have call predecessors, (43), 23 states have return successors, (50), 42 states have call predecessors, (50), 42 states have call successors, (50) [2021-11-25 19:10:22,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 185 transitions. [2021-11-25 19:10:22,274 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 185 transitions. Word has length 132 [2021-11-25 19:10:22,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:10:22,275 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 185 transitions. [2021-11-25 19:10:22,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (28), 4 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-25 19:10:22,275 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 185 transitions. [2021-11-25 19:10:22,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 19:10:22,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:10:22,279 INFO L514 BasicCegarLoop]: trace histogram [10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:10:22,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 19:10:22,279 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:10:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:10:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash 536078822, now seen corresponding path program 1 times [2021-11-25 19:10:22,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:10:22,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180749269] [2021-11-25 19:10:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:22,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:10:22,359 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:10:22,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944571101] [2021-11-25 19:10:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:10:22,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:10:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:10:22,361 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:10:22,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f85db0-064b-479e-bb20-7d97ed6f0a23/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 19:10:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:10:22,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-25 19:10:22,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:10:22,994 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:10:22,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-11-25 19:10:23,423 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-11-25 19:10:23,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 2 case distinctions, treesize of input 17 treesize of output 21 [2021-11-25 19:10:23,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:10:23,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 19:10:23,884 INFO L354 Elim1Store]: treesize reduction 53, result has 32.9 percent of original size [2021-11-25 19:10:23,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 53 [2021-11-25 19:10:24,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 19:10:24,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:24,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:10:24,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-11-25 19:10:24,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 14 [2021-11-25 19:10:24,778 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-25 19:10:24,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-11-25 19:10:25,007 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1102 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1102) |c_#memory_$Pointer$.base|)) is different from true [2021-11-25 19:10:25,165 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1103 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_add_size_checked_#in~r#1.base| v_ArrVal_1103) |c_#memory_$Pointer$.base|)) is different from true [2021-11-25 19:10:25,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:25,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:10:25,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2021-11-25 19:10:25,310 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-11-25 19:10:25,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 21 treesize of output 25 [2021-11-25 19:11:51,105 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-25 19:11:51,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 29 [2021-11-25 19:12:05,847 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 3 proven. 85 refuted. 0 times theorem prover too weak. 27 trivial. 2 not checked. [2021-11-25 19:12:05,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:12:06,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2021-11-25 19:12:06,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2021-11-25 19:12:07,303 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:12:07,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180749269] [2021-11-25 19:12:07,303 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:12:07,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944571101] [2021-11-25 19:12:07,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944571101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:12:07,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [972492189] [2021-11-25 19:12:07,336 INFO L159 IcfgInterpreter]: Started Sifa with 88 locations of interest [2021-11-25 19:12:07,337 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:12:07,343 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:12:07,349 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:12:07,349 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:12:10,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:10,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:12:10,866 INFO L244 Elim1Store]: Index analysis took 718 ms [2021-11-25 19:13:04,220 WARN L227 SmtUtils]: Spent 53.27s on a formula simplification. DAG size of input: 2362 DAG size of output: 1378 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 19:13:04,227 INFO L354 Elim1Store]: treesize reduction 4522, result has 34.3 percent of original size [2021-11-25 19:13:04,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19310 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 197 case distinctions, treesize of input 995 treesize of output 2959 [2021-11-25 19:13:08,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:08,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:13:10,077 INFO L244 Elim1Store]: Index analysis took 2648 ms [2021-11-25 19:14:56,574 WARN L227 SmtUtils]: Spent 1.77m on a formula simplification. DAG size of input: 3151 DAG size of output: 1575 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 19:14:56,578 INFO L354 Elim1Store]: treesize reduction 7470, result has 25.5 percent of original size [2021-11-25 19:14:56,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 200 select indices, 200 select index equivalence classes, 19507 disjoint index pairs (out of 19900 index pairs), introduced 200 new quantified variables, introduced 591 case distinctions, treesize of input 1014 treesize of output 3173 [2021-11-25 19:14:59,244 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-25 19:14:59,442 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-25 19:14:59,707 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-25 19:15:00,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:00,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:15:01,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:15:01,136 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:15:01,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:15:01,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:01,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:01,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 35 treesize of output 9 [2021-11-25 19:15:01,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:01,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 17 [2021-11-25 19:15:01,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:01,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 17 [2021-11-25 19:15:01,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:01,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:15:02,021 INFO L354 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2021-11-25 19:15:02,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 137 treesize of output 114 [2021-11-25 19:15:02,063 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 19:15:02,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 104 [2021-11-25 19:15:04,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 45 [2021-11-25 19:15:04,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:04,259 INFO L354 Elim1Store]: treesize reduction 48, result has 20.0 percent of original size [2021-11-25 19:15:04,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 44 [2021-11-25 19:15:05,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:15:05,293 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:05,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:15:05,315 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:15:05,324 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:05,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:15:05,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:05,392 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:05,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 32 treesize of output 46 [2021-11-25 19:15:05,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:05,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:05,433 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:15:05,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 36 [2021-11-25 19:15:05,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:05,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:05,490 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:05,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 48 [2021-11-25 19:15:06,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:15:06,592 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:06,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:15:06,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:15:06,638 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:06,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2021-11-25 19:15:06,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:06,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:06,679 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-25 19:15:06,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 40 [2021-11-25 19:15:06,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:06,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:06,735 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:06,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 48 [2021-11-25 19:15:06,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:06,795 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 19:15:06,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 3 case distinctions, treesize of input 30 treesize of output 44 [2021-11-25 19:15:07,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:10,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:10,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2021-11-25 19:15:10,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:10,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:15:10,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:15:10,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2021-11-25 19:15:13,738 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-25 19:15:13,995 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 196 [2021-11-25 19:15:14,209 INFO L197 IcfgInterpreter]: Interpreting procedure nondet_uint64_t with input of size 57 for LOIs [2021-11-25 19:15:14,219 INFO L197 IcfgInterpreter]: Interpreting procedure hash_table_state_required_bytes with input of size 197 for LOIs [2021-11-25 19:15:18,418 INFO L354 Elim1Store]: treesize reduction 116, result has 38.6 percent of original size [2021-11-25 19:15:18,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 497 treesize of output 551 [2021-11-25 19:15:18,640 INFO L354 Elim1Store]: treesize reduction 62, result has 41.5 percent of original size [2021-11-25 19:15:18,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 551 treesize of output 575 [2021-11-25 19:18:22,736 INFO L354 Elim1Store]: treesize reduction 62, result has 41.5 percent of original size [2021-11-25 19:18:22,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 497 treesize of output 522 [2021-11-25 19:18:23,048 INFO L354 Elim1Store]: treesize reduction 116, result has 38.6 percent of original size [2021-11-25 19:18:23,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 522 treesize of output 575 [2021-11-25 19:20:41,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:20:41,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:20:41,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-25 19:20:41,618 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-25 19:20:41,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 1 case distinctions, treesize of input 12 treesize of output 14 [2021-11-25 19:20:42,029 INFO L354 Elim1Store]: treesize reduction 62, result has 41.5 percent of original size [2021-11-25 19:20:42,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 497 treesize of output 522 [2021-11-25 19:20:42,355 INFO L354 Elim1Store]: treesize reduction 116, result has 38.6 percent of original size [2021-11-25 19:20:42,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 522 treesize of output 575 [2021-11-25 19:21:19,859 INFO L197 IcfgInterpreter]: Interpreting procedure aws_mul_size_checked with input of size 279 for LOIs [2021-11-25 19:21:19,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:21:19,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:21:19,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:21:19,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-25 19:21:20,198 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_mult with input of size 11 for LOIs [2021-11-25 19:21:20,205 INFO L197 IcfgInterpreter]: Interpreting procedure aws_raise_error with input of size 22 for LOIs [2021-11-25 19:21:20,212 INFO L197 IcfgInterpreter]: Interpreting procedure aws_add_size_checked with input of size 92 for LOIs [2021-11-25 19:21:20,556 INFO L197 IcfgInterpreter]: Interpreting procedure __CPROVER_overflow_plus with input of size 73 for LOIs [2021-11-25 19:21:20,584 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 117 for LOIs [2021-11-25 19:21:20,646 INFO L197 IcfgInterpreter]: Interpreting procedure bounded_malloc with input of size 69 for LOIs [2021-11-25 19:21:20,811 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 74 for LOIs [2021-11-25 19:21:20,824 INFO L197 IcfgInterpreter]: Interpreting procedure aws_hash_table_is_valid with input of size 137 for LOIs [2021-11-25 19:21:46,357 INFO L197 IcfgInterpreter]: Interpreting procedure hash_table_state_is_valid with input of size 151 for LOIs [2021-11-25 19:21:57,360 INFO L197 IcfgInterpreter]: Interpreting procedure aws_is_power_of_two with input of size 81 for LOIs [2021-11-25 19:21:57,446 INFO L180 IcfgInterpreter]: Interpretation finished