./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_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_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/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_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/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_b725924f-a7d8-4f2c-a7e5-ba4975e46274/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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:48:16,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:48:16,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:48:16,139 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:48:16,140 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:48:16,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:48:16,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:48:16,147 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:48:16,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:48:16,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:48:16,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:48:16,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:48:16,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:48:16,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:48:16,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:48:16,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:48:16,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:48:16,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:48:16,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:48:16,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:48:16,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:48:16,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:48:16,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:48:16,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:48:16,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:48:16,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:48:16,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:48:16,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:48:16,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:48:16,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:48:16,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:48:16,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:48:16,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:48:16,202 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:48:16,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:48:16,204 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:48:16,205 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:48:16,205 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:48:16,206 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:48:16,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:48:16,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:48:16,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 00:48:16,256 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:48:16,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:48:16,257 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:48:16,257 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:48:16,258 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:48:16,258 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:48:16,259 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:48:16,259 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:48:16,259 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:48:16,260 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:48:16,260 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:48:16,260 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:48:16,260 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:48:16,261 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:48:16,261 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:48:16,261 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:48:16,262 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:48:16,262 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:48:16,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:48:16,263 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:48:16,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:48:16,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:48:16,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:48:16,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:48:16,264 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:48:16,265 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:48:16,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:48:16,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:48:16,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:48:16,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:48:16,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:48:16,267 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:48:16,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:48:16,279 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:48:16,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:48:16,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:48:16,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:48:16,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:48:16,280 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_b725924f-a7d8-4f2c-a7e5-ba4975e46274/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2021-11-21 00:48:16,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:48:16,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:48:16,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:48:16,699 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:48:16,701 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:48:16,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-11-21 00:48:16,784 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/data/fb543bbe7/78575d83fda14e59ae25541d7ca73fcc/FLAG6de532c6a [2021-11-21 00:48:17,916 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:48:17,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2021-11-21 00:48:17,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/data/fb543bbe7/78575d83fda14e59ae25541d7ca73fcc/FLAG6de532c6a [2021-11-21 00:48:18,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/data/fb543bbe7/78575d83fda14e59ae25541d7ca73fcc [2021-11-21 00:48:18,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:48:18,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:48:18,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:48:18,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:48:18,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:48:18,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:48:18" (1/1) ... [2021-11-21 00:48:18,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e3a69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:18, skipping insertion in model container [2021-11-21 00:48:18,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:48:18" (1/1) ... [2021-11-21 00:48:18,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:48:18,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:48:18,724 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_b725924f-a7d8-4f2c-a7e5-ba4975e46274/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2021-11-21 00:48:18,733 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_b725924f-a7d8-4f2c-a7e5-ba4975e46274/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2021-11-21 00:48:19,540 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:48:19,622 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,626 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,641 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,642 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,644 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,647 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,648 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:19,649 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,131 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:48:20,133 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:48:20,134 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:48:20,136 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:48:20,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:48:20,138 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:48:20,139 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:48:20,140 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:48:20,141 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:48:20,141 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:48:20,319 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,326 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,386 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:48:20,418 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:48:20,453 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_b725924f-a7d8-4f2c-a7e5-ba4975e46274/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2021-11-21 00:48:20,454 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_b725924f-a7d8-4f2c-a7e5-ba4975e46274/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2021-11-21 00:48:20,517 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 00:48:20,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,536 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,545 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,546 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,547 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,589 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 00:48:20,590 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 00:48:20,591 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 00:48:20,592 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 00:48:20,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 00:48:20,593 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 00:48:20,594 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 00:48:20,595 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 00:48:20,606 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 00:48:20,607 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 00:48:20,683 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 00:48:20,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:48:21,107 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:48:21,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21 WrapperNode [2021-11-21 00:48:21,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:48:21,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:48:21,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:48:21,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:48:21,118 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,279 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,387 INFO L137 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 591 [2021-11-21 00:48:21,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:48:21,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:48:21,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:48:21,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:48:21,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,400 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,411 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,446 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:48:21,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:48:21,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:48:21,468 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:48:21,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (1/1) ... [2021-11-21 00:48:21,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:48:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:48:21,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:48:21,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:48:21,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:48:21,583 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-21 00:48:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-21 00:48:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-21 00:48:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-21 00:48:21,584 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 00:48:21,584 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 00:48:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 00:48:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 00:48:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 00:48:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 00:48:21,585 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 00:48:21,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:48:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:48:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:48:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:48:21,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:48:21,586 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 00:48:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 00:48:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-11-21 00:48:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-11-21 00:48:21,587 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 00:48:21,587 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 00:48:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-21 00:48:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-21 00:48:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 00:48:21,588 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 00:48:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:48:21,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:48:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 00:48:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 00:48:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 00:48:21,589 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 00:48:21,589 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 00:48:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 00:48:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-21 00:48:21,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-21 00:48:21,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:48:21,968 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:48:21,970 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:48:23,077 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:48:23,180 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:48:23,180 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-21 00:48:23,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:48:23 BoogieIcfgContainer [2021-11-21 00:48:23,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:48:23,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:48:23,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:48:23,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:48:23,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:48:18" (1/3) ... [2021-11-21 00:48:23,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f72870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:48:23, skipping insertion in model container [2021-11-21 00:48:23,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:48:21" (2/3) ... [2021-11-21 00:48:23,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f72870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:48:23, skipping insertion in model container [2021-11-21 00:48:23,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:48:23" (3/3) ... [2021-11-21 00:48:23,194 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2021-11-21 00:48:23,200 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:48:23,200 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 00:48:23,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:48:23,264 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 00:48:23,264 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 00:48:23,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-21 00:48:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-21 00:48:23,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:23,296 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:48:23,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:23,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:23,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1440173234, now seen corresponding path program 1 times [2021-11-21 00:48:23,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:23,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114133552] [2021-11-21 00:48:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:23,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:23,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-21 00:48:24,130 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:24,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114133552] [2021-11-21 00:48:24,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114133552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:48:24,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804537205] [2021-11-21 00:48:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:24,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:48:24,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:48:24,139 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:48:24,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:48:24,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:24,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 2028 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:48:24,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:48:25,054 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-21 00:48:25,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:48:25,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804537205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:25,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 00:48:25,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-21 00:48:25,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665774899] [2021-11-21 00:48:25,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:25,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:48:25,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:25,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:48:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:48:25,118 INFO L87 Difference]: Start difference. First operand has 99 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 55 states have internal predecessors, (64), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 00:48:25,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:25,625 INFO L93 Difference]: Finished difference Result 169 states and 225 transitions. [2021-11-21 00:48:25,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:48:25,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 56 [2021-11-21 00:48:25,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:25,651 INFO L225 Difference]: With dead ends: 169 [2021-11-21 00:48:25,651 INFO L226 Difference]: Without dead ends: 95 [2021-11-21 00:48:25,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 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 00:48:25,662 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 22 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:25,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 359 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 00:48:25,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-21 00:48:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-11-21 00:48:25,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2021-11-21 00:48:25,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2021-11-21 00:48:25,756 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 56 [2021-11-21 00:48:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:25,758 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2021-11-21 00:48:25,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-21 00:48:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2021-11-21 00:48:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 00:48:25,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:25,766 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 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] [2021-11-21 00:48:25,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:48:25,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:48:25,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:25,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:25,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1582919181, now seen corresponding path program 1 times [2021-11-21 00:48:25,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:25,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619341791] [2021-11-21 00:48:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:25,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:26,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:48:26,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1593839893] [2021-11-21 00:48:26,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:26,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:48:26,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:48:26,094 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:48:26,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:48:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:26,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:48:26,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:48:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-21 00:48:26,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 00:48:26,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:48:26,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619341791] [2021-11-21 00:48:26,742 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:48:26,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593839893] [2021-11-21 00:48:26,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593839893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:48:26,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:48:26,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 00:48:26,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172475507] [2021-11-21 00:48:26,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:48:26,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:48:26,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:48:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:48:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:48:26,746 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-21 00:48:27,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:48:27,041 INFO L93 Difference]: Finished difference Result 148 states and 179 transitions. [2021-11-21 00:48:27,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:48:27,042 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 65 [2021-11-21 00:48:27,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:48:27,044 INFO L225 Difference]: With dead ends: 148 [2021-11-21 00:48:27,045 INFO L226 Difference]: Without dead ends: 93 [2021-11-21 00:48:27,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 60 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 00:48:27,047 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 22 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:48:27,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 495 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-21 00:48:27,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-21 00:48:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-11-21 00:48:27,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.1) internal successors, (55), 51 states have internal predecessors, (55), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-21 00:48:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2021-11-21 00:48:27,071 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 65 [2021-11-21 00:48:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:48:27,072 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2021-11-21 00:48:27,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-11-21 00:48:27,073 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2021-11-21 00:48:27,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-21 00:48:27,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:48:27,076 INFO L514 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:48:27,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:48:27,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:48:27,298 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 00:48:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:48:27,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1235168463, now seen corresponding path program 1 times [2021-11-21 00:48:27,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:48:27,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273347602] [2021-11-21 00:48:27,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:27,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:48:27,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 00:48:27,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7151154] [2021-11-21 00:48:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:48:27,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:48:27,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:48:27,366 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:48:27,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b725924f-a7d8-4f2c-a7e5-ba4975e46274/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:48:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:48:28,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 2358 conjuncts, 293 conjunts are in the unsatisfiable core [2021-11-21 00:48:28,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:48:28,275 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 00:48:29,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:29,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:29,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:29,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-21 00:48:33,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:33,931 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 00:48:33,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:33,958 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 00:48:39,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:39,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:39,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:39,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:39,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:39,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:39,847 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:48:39,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 142 [2021-11-21 00:48:39,878 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:48:39,879 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 139 treesize of output 139 [2021-11-21 00:48:39,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:39,891 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 133 treesize of output 121 [2021-11-21 00:48:39,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:48:39,902 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 118 treesize of output 106 [2021-11-21 00:50:45,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:45,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:45,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:45,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:45,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:50:45,472 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:50:45,590 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-21 00:50:45,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 134 treesize of output 132 [2021-11-21 00:50:45,608 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 136 treesize of output 124 [2021-11-21 00:50:45,622 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 121 treesize of output 109 [2021-11-21 00:52:37,409 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 00:52:37,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 320 treesize of output 216 [2021-11-21 00:52:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 24 refuted. 2 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-21 00:52:38,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:52:58,239 WARN L227 SmtUtils]: Spent 18.59s on a formula simplification that was a NOOP. DAG size: 229 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:53:10,028 WARN L227 SmtUtils]: Spent 11.78s on a formula simplification that was a NOOP. DAG size: 175 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:54:15,574 WARN L227 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 398 DAG size of output: 192 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:54:44,607 WARN L227 SmtUtils]: Spent 29.03s on a formula simplification that was a NOOP. DAG size: 186 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:59:18,643 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse6 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse0 (let ((.cse7 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse7 .cse6) (select .cse7 (+ 16 c_aws_array_list_length_~list.offset)))))) (let ((.cse5 (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse0)) c_aws_array_list_length_~list.base))) (let ((.cse1 (mod (select .cse5 (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616))) (or (<= (mod .cse0 18446744073709551616) .cse1) (let ((.cse2 (forall ((v_DerPreprocessor_1 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_1)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) (.cse3 (forall ((v_DerPreprocessor_2 Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_2)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) (.cse4 (or (forall ((v_DerPreprocessor_1 Int)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_1)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) (forall ((v_DerPreprocessor_2 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_2)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0)))))) (and .cse2 .cse3 (not (= 0 .cse1)) (or (and .cse2 .cse3 .cse4) (not (= (mod (select .cse5 .cse6) 18446744073709551616) 0))) .cse4)))))))) (forall ((|v_aws_mul_size_checked_#in~r#1.base_7| Int)) (let ((.cse14 (+ c_aws_array_list_length_~list.offset 24))) (let ((.cse16 (let ((.cse17 (select |c_#memory_int| c_aws_array_list_length_~list.base))) (* (select .cse17 .cse14) (select .cse17 (+ 16 c_aws_array_list_length_~list.offset)))))) (let ((.cse13 (select (store |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_int| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 .cse16)) c_aws_array_list_length_~list.base))) (let ((.cse15 (mod (select .cse13 (+ 8 c_aws_array_list_length_~list.offset)) 18446744073709551616))) (or (let ((.cse8 (forall ((v_DerPreprocessor_1 Int)) (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_1)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) (.cse9 (forall ((v_DerPreprocessor_2 Int)) (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_2)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) (.cse12 (= 0 .cse15)) (.cse11 (not (= (mod (select .cse13 .cse14) 18446744073709551616) 0)))) (and (or (let ((.cse10 (or (forall ((v_DerPreprocessor_1 Int)) (not (= (select (select (store |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.offset| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_1)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0))) (forall ((v_DerPreprocessor_2 Int)) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7| (store (select |c_#memory_$Pointer$.base| |v_aws_mul_size_checked_#in~r#1.base_7|) 0 v_DerPreprocessor_2)) c_aws_array_list_length_~list.base) (+ 32 c_aws_array_list_length_~list.offset)) 0)))))) (and (or (and .cse8 .cse9 .cse10) .cse11) .cse10)) .cse12) (or (and .cse8 .cse9 (not .cse12)) .cse11))) (< .cse15 (mod .cse16 18446744073709551616))))))))) is different from false [2021-11-21 00:59:19,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:59:19,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273347602] [2021-11-21 00:59:19,031 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 00:59:19,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7151154] [2021-11-21 00:59:19,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7151154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:59:19,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1779217142] [2021-11-21 00:59:19,056 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2021-11-21 00:59:19,056 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:59:19,061 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:59:19,069 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:59:19,070 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:59:24,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:24,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:25,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:59:25,465 INFO L244 Elim1Store]: Index analysis took 1608 ms [2021-11-21 00:59:53,876 WARN L227 SmtUtils]: Spent 28.34s on a formula simplification. DAG size of input: 1749 DAG size of output: 1163 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:59:53,880 INFO L354 Elim1Store]: treesize reduction 1948, result has 47.2 percent of original size [2021-11-21 00:59:53,883 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 194 case distinctions, treesize of input 992 treesize of output 2350 [2021-11-21 01:00:20,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:00:21,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:00:21,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:00:22,169 INFO L244 Elim1Store]: Index analysis took 2098 ms [2021-11-21 01:01:09,749 WARN L227 SmtUtils]: Spent 47.52s on a formula simplification. DAG size of input: 2139 DAG size of output: 1167 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:01:09,753 INFO L354 Elim1Store]: treesize reduction 3492, result has 33.3 percent of original size [2021-11-21 01:01:09,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19507 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 388 case distinctions, treesize of input 1002 treesize of output 2369 [2021-11-21 01:01:54,166 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:01:54,293 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:01:55,523 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 192 [2021-11-21 01:02:00,098 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 01:02:00,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:00,114 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 01:02:00,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:00,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:00,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:00,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-21 01:02:00,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:00,197 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 01:02:02,481 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 [2021-11-21 01:02:02,526 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 [2021-11-21 01:02:02,918 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 25 treesize of output 22 [2021-11-21 01:02:02,926 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 19 treesize of output 18 [2021-11-21 01:02:03,263 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 [2021-11-21 01:02:03,287 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 01:02:03,301 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 01:02:03,369 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 01:02:03,645 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 [2021-11-21 01:02:03,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:03,746 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:02:03,747 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 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 01:02:03,810 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 [2021-11-21 01:02:04,200 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 [2021-11-21 01:02:04,257 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 [2021-11-21 01:02:04,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:02:04,443 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:02:04,443 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 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 01:02:04,593 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 50 treesize of output 49