./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P --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 c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:00:36,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:00:36,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:00:36,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:00:36,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:00:36,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:00:36,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:00:36,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:00:36,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:00:36,225 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:00:36,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:00:36,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:00:36,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:00:36,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:00:36,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:00:36,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:00:36,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:00:36,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:00:36,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:00:36,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:00:36,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:00:36,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:00:36,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:00:36,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:00:36,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:00:36,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:00:36,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:00:36,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:00:36,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:00:36,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:00:36,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:00:36,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:00:36,287 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:00:36,288 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:00:36,289 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:00:36,289 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:00:36,290 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:00:36,290 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:00:36,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:00:36,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:00:36,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:00:36,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:00:36,327 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:00:36,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:00:36,327 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:00:36,328 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:00:36,328 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:00:36,329 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:00:36,329 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:00:36,329 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:00:36,329 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:00:36,330 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:00:36,330 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:00:36,330 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:00:36,330 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:00:36,330 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:00:36,331 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:00:36,331 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:00:36,331 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:00:36,331 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:00:36,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:00:36,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:00:36,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:00:36,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:00:36,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:00:36,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:00:36,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:00:36,334 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:00:36,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:00:36,334 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:00:36,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:00:36,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:00:36,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:00:36,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:00:36,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:00:36,335 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:00:36,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:00:36,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:00:36,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:00:36,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:00:36,336 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_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12ad62b7b197015493bfb3c1dd9a5de2922d9b16e39f249961c276d8b82591b [2021-11-21 01:00:36,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:00:36,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:00:36,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:00:36,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:00:36,625 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:00:36,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2021-11-21 01:00:36,748 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/data/313cd71fd/094cce3eb67c43f693fb2e29acb075e6/FLAG360f1eab5 [2021-11-21 01:00:37,500 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:00:37,501 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i [2021-11-21 01:00:37,547 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/data/313cd71fd/094cce3eb67c43f693fb2e29acb075e6/FLAG360f1eab5 [2021-11-21 01:00:37,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/data/313cd71fd/094cce3eb67c43f693fb2e29acb075e6 [2021-11-21 01:00:37,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:00:37,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:00:37,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:00:37,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:00:37,592 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:00:37,593 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:00:37" (1/1) ... [2021-11-21 01:00:37,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56e4c9b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:37, skipping insertion in model container [2021-11-21 01:00:37,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:00:37" (1/1) ... [2021-11-21 01:00:37,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:00:37,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:00:38,080 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_4d866732-1272-4f9b-88ad-134f916432e2/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4504,4517] [2021-11-21 01:00:38,088 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_4d866732-1272-4f9b-88ad-134f916432e2/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4564,4577] [2021-11-21 01:00:38,982 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:00:39,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,064 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,080 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,081 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,083 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,084 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,447 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:00:39,448 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:00:39,449 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:00:39,450 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:00:39,452 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:00:39,453 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:00:39,453 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:00:39,454 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:00:39,455 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:00:39,455 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:00:39,598 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,599 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,604 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,671 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:00:39,726 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:00:39,760 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_4d866732-1272-4f9b-88ad-134f916432e2/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4504,4517] [2021-11-21 01:00:39,761 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_4d866732-1272-4f9b-88ad-134f916432e2/sv-benchmarks/c/aws-c-common/aws_array_list_ensure_capacity_harness.i[4564,4577] [2021-11-21 01:00:39,815 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:00:39,846 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,847 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,851 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,853 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,866 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,869 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,878 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,879 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,880 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,881 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:39,986 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:00:39,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:00:39,991 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:00:39,992 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:00:39,993 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:00:39,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:00:39,996 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:00:39,997 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:00:39,997 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:00:39,998 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:00:40,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:40,070 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:40,072 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:40,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:40,129 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:00:40,141 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:00:40,437 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:00:40,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40 WrapperNode [2021-11-21 01:00:40,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:00:40,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:00:40,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:00:40,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:00:40,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,693 INFO L137 Inliner]: procedures = 691, calls = 1684, calls flagged for inlining = 52, calls inlined = 11, statements flattened = 804 [2021-11-21 01:00:40,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:00:40,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:00:40,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:00:40,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:00:40,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:00:40,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:00:40,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:00:40,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:00:40,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (1/1) ... [2021-11-21 01:00:40,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:00:40,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:40,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:00:40,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:00:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:00:40,953 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-21 01:00:40,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-21 01:00:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-21 01:00:40,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-21 01:00:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 01:00:40,954 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 01:00:40,954 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-21 01:00:40,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-21 01:00:40,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:00:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 01:00:40,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 01:00:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:00:40,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:00:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:00:40,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:00:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:00:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-21 01:00:40,957 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-21 01:00:40,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:00:40,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:00:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 01:00:40,958 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 01:00:40,958 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-21 01:00:40,958 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-21 01:00:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 01:00:40,959 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 01:00:40,959 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-21 01:00:40,960 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-21 01:00:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-21 01:00:40,961 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-21 01:00:40,961 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:00:40,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:00:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-21 01:00:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-21 01:00:40,962 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-11-21 01:00:40,962 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-11-21 01:00:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:00:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-21 01:00:40,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-21 01:00:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:00:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:00:40,963 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 01:00:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 01:00:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 01:00:40,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 01:00:40,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-21 01:00:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-21 01:00:40,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_ensure_capacity [2021-11-21 01:00:40,965 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_ensure_capacity [2021-11-21 01:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:00:40,966 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-21 01:00:40,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-21 01:00:40,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:00:41,411 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:00:41,413 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:00:42,803 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:00:42,972 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:00:42,972 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 01:00:42,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:00:42 BoogieIcfgContainer [2021-11-21 01:00:42,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:00:42,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:00:42,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:00:42,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:00:42,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:00:37" (1/3) ... [2021-11-21 01:00:42,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590483b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:00:42, skipping insertion in model container [2021-11-21 01:00:42,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:00:40" (2/3) ... [2021-11-21 01:00:42,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590483b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:00:42, skipping insertion in model container [2021-11-21 01:00:42,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:00:42" (3/3) ... [2021-11-21 01:00:42,993 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_ensure_capacity_harness.i [2021-11-21 01:00:42,999 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:00:42,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:00:43,065 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:00:43,083 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 [2021-11-21 01:00:43,086 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:00:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 112 states have internal predecessors, (134), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2021-11-21 01:00:43,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-21 01:00:43,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:43,135 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:43,135 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:43,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1517059556, now seen corresponding path program 1 times [2021-11-21 01:00:43,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:43,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443306535] [2021-11-21 01:00:43,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:43,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:43,938 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-21 01:00:43,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:43,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443306535] [2021-11-21 01:00:43,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443306535] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:00:43,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772693421] [2021-11-21 01:00:43,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:43,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:43,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:43,963 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:44,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:00:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:44,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 2181 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:00:44,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:44,811 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-21 01:00:44,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:00:44,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772693421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:44,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:00:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-21 01:00:44,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768115138] [2021-11-21 01:00:44,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:44,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:00:44,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:00:44,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:00:44,852 INFO L87 Difference]: Start difference. First operand has 207 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 112 states have internal predecessors, (134), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:00:45,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:45,953 INFO L93 Difference]: Finished difference Result 393 states and 562 transitions. [2021-11-21 01:00:45,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:00:45,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 71 [2021-11-21 01:00:45,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:45,987 INFO L225 Difference]: With dead ends: 393 [2021-11-21 01:00:45,987 INFO L226 Difference]: Without dead ends: 201 [2021-11-21 01:00:45,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:00:46,004 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 29 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:46,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 880 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-21 01:00:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-21 01:00:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-21 01:00:46,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 106 states have (on average 1.179245283018868) internal successors, (125), 109 states have internal predecessors, (125), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2021-11-21 01:00:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2021-11-21 01:00:46,100 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 278 transitions. Word has length 71 [2021-11-21 01:00:46,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:46,101 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 278 transitions. [2021-11-21 01:00:46,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:00:46,102 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 278 transitions. [2021-11-21 01:00:46,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-21 01:00:46,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:46,113 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:46,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:46,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:46,327 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash 717667055, now seen corresponding path program 1 times [2021-11-21 01:00:46,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:46,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100360801] [2021-11-21 01:00:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:46,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:46,408 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:00:46,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1578392144] [2021-11-21 01:00:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:46,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:46,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:46,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:46,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:00:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:47,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:00:47,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-21 01:00:47,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:00:47,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:47,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100360801] [2021-11-21 01:00:47,256 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:00:47,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578392144] [2021-11-21 01:00:47,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578392144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:47,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:47,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:00:47,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018367794] [2021-11-21 01:00:47,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:47,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:00:47,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:47,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:00:47,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:00:47,260 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-21 01:00:48,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:48,834 INFO L93 Difference]: Finished difference Result 370 states and 510 transitions. [2021-11-21 01:00:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:00:48,834 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) Word has length 80 [2021-11-21 01:00:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:48,838 INFO L225 Difference]: With dead ends: 370 [2021-11-21 01:00:48,838 INFO L226 Difference]: Without dead ends: 201 [2021-11-21 01:00:48,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:00:48,841 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 94 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:48,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 1145 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:00:48,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-21 01:00:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-21 01:00:48,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 106 states have (on average 1.179245283018868) internal successors, (125), 109 states have internal predecessors, (125), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (74), 70 states have call predecessors, (74), 70 states have call successors, (74) [2021-11-21 01:00:48,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 272 transitions. [2021-11-21 01:00:48,894 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 272 transitions. Word has length 80 [2021-11-21 01:00:48,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:48,895 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 272 transitions. [2021-11-21 01:00:48,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-21 01:00:48,896 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 272 transitions. [2021-11-21 01:00:48,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-21 01:00:48,901 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:48,902 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2021-11-21 01:00:48,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:49,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:49,125 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:49,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:49,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1286962316, now seen corresponding path program 2 times [2021-11-21 01:00:49,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:49,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217944998] [2021-11-21 01:00:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:49,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:49,240 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:00:49,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [377610075] [2021-11-21 01:00:49,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:00:49,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:49,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:49,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:49,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:00:49,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 01:00:49,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:00:49,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1890 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:00:49,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-21 01:00:49,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:00:49,855 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:49,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217944998] [2021-11-21 01:00:49,855 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:00:49,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377610075] [2021-11-21 01:00:49,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377610075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:49,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:49,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:00:49,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89317365] [2021-11-21 01:00:49,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:49,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:00:49,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:49,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:00:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:00:49,860 INFO L87 Difference]: Start difference. First operand 201 states and 272 transitions. Second operand has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-21 01:00:50,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:50,915 INFO L93 Difference]: Finished difference Result 348 states and 463 transitions. [2021-11-21 01:00:50,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:00:50,916 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 89 [2021-11-21 01:00:50,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:50,919 INFO L225 Difference]: With dead ends: 348 [2021-11-21 01:00:50,919 INFO L226 Difference]: Without dead ends: 205 [2021-11-21 01:00:50,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:00:50,921 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 1 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:50,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 967 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:00:50,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-21 01:00:50,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2021-11-21 01:00:50,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 109 states have (on average 1.1743119266055047) internal successors, (128), 112 states have internal predecessors, (128), 73 states have call successors, (73), 21 states have call predecessors, (73), 22 states have return successors, (75), 71 states have call predecessors, (75), 70 states have call successors, (75) [2021-11-21 01:00:50,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2021-11-21 01:00:50,940 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 89 [2021-11-21 01:00:50,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:50,941 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2021-11-21 01:00:50,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-21 01:00:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2021-11-21 01:00:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-21 01:00:50,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:50,955 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2021-11-21 01:00:51,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:51,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:51,156 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:51,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:51,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1373110104, now seen corresponding path program 1 times [2021-11-21 01:00:51,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:51,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965010510] [2021-11-21 01:00:51,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:51,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:51,232 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:00:51,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160483094] [2021-11-21 01:00:51,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:51,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:51,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:51,234 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:51,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:00:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:51,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:00:51,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-21 01:00:52,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:00:52,003 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:00:52,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965010510] [2021-11-21 01:00:52,003 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:00:52,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160483094] [2021-11-21 01:00:52,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160483094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:00:52,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:00:52,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:00:52,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407079182] [2021-11-21 01:00:52,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:00:52,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:00:52,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:00:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:00:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:00:52,008 INFO L87 Difference]: Start difference. First operand 205 states and 276 transitions. Second operand has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-21 01:00:53,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:00:53,628 INFO L93 Difference]: Finished difference Result 375 states and 501 transitions. [2021-11-21 01:00:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-21 01:00:53,629 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 93 [2021-11-21 01:00:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:00:53,632 INFO L225 Difference]: With dead ends: 375 [2021-11-21 01:00:53,633 INFO L226 Difference]: Without dead ends: 203 [2021-11-21 01:00:53,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:00:53,635 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 129 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:00:53,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 1313 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-21 01:00:53,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-21 01:00:53,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2021-11-21 01:00:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 108 states have (on average 1.1666666666666667) internal successors, (126), 110 states have internal predecessors, (126), 73 states have call successors, (73), 21 states have call predecessors, (73), 21 states have return successors, (71), 71 states have call predecessors, (71), 70 states have call successors, (71) [2021-11-21 01:00:53,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2021-11-21 01:00:53,655 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 93 [2021-11-21 01:00:53,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:00:53,655 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2021-11-21 01:00:53,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2021-11-21 01:00:53,656 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2021-11-21 01:00:53,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-21 01:00:53,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:00:53,658 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:00:53,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:00:53,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:53,885 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:00:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:00:53,886 INFO L85 PathProgramCache]: Analyzing trace with hash -963749564, now seen corresponding path program 1 times [2021-11-21 01:00:53,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:00:53,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959572945] [2021-11-21 01:00:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:53,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:00:53,942 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:00:53,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [581516575] [2021-11-21 01:00:53,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:00:53,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:00:53,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:00:53,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:00:53,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d866732-1272-4f9b-88ad-134f916432e2/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:00:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:00:58,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 341 conjunts are in the unsatisfiable core [2021-11-21 01:00:58,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:00:58,901 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 [2021-11-21 01:00:59,740 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 [2021-11-21 01:01:04,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:01:04,090 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 21 treesize of output 20 [2021-11-21 01:01:04,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:01:04,104 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 21 treesize of output 20 [2021-11-21 01:01:08,978 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 72 treesize of output 68 [2021-11-21 01:01:08,999 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:01:09,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 68 treesize of output 68 [2021-11-21 01:01:09,027 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:01:09,027 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 62 treesize of output 50 [2021-11-21 01:01:09,052 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-21 01:01:09,053 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 47 treesize of output 35 [2021-11-21 01:01:38,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:01:38,825 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:01:38,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 76 [2021-11-21 01:01:38,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:01:38,868 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 70 treesize of output 58 [2021-11-21 01:01:38,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:01:38,876 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 55 treesize of output 43 [2021-11-21 01:02:01,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:01,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:01,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:01,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:01,820 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:02:01,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:01,828 INFO L354 Elim1Store]: treesize reduction 2, result has 33.3 percent of original size [2021-11-21 01:02:01,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 121 treesize of output 125 [2021-11-21 01:02:01,838 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 110 treesize of output 98 [2021-11-21 01:02:01,846 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 95 treesize of output 83 [2021-11-21 01:03:18,419 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:03:18,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 266 treesize of output 194 [2021-11-21 01:03:18,454 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 130 treesize of output 118 [2021-11-21 01:03:18,468 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 115 treesize of output 111 [2021-11-21 01:03:18,481 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 108 treesize of output 96 [2021-11-21 01:03:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 37 proven. 32 refuted. 2 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-21 01:03:19,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:03:36,744 WARN L227 SmtUtils]: Spent 13.20s on a formula simplification that was a NOOP. DAG size: 177 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 01:04:39,560 WARN L227 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 400 DAG size of output: 194 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 01:04:56,375 WARN L227 SmtUtils]: Spent 16.81s on a formula simplification that was a NOOP. DAG size: 188 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition)