./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_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_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/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_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/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_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:59:30,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:59:30,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:59:30,735 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:59:30,736 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:59:30,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:59:30,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:59:30,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:59:30,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:59:30,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:59:30,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:59:30,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:59:30,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:59:30,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:59:30,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:59:30,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:59:30,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:59:30,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:59:30,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:59:30,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:59:30,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:59:30,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:59:30,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:59:30,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:59:30,796 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:59:30,797 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:59:30,797 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:59:30,799 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:59:30,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:59:30,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:59:30,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:59:30,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:59:30,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:59:30,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:59:30,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:59:30,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:59:30,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:59:30,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:59:30,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:59:30,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:59:30,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:59:30,812 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-20 23:59:30,849 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:59:30,849 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:59:30,849 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:59:30,849 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:59:30,850 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:59:30,850 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:59:30,850 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:59:30,851 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:59:30,851 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:59:30,851 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:59:30,851 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:59:30,851 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:59:30,852 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:59:30,852 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:59:30,852 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:59:30,852 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:59:30,852 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:59:30,853 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:59:30,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:59:30,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:59:30,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:59:30,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 23:59:30,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:59:30,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 23:59:30,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 23:59:30,859 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:59:30,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 23:59:30,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:59:30,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:59:30,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:59:30,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:59:30,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:59:30,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 23:59:30,863 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:59:30,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:59:30,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 23:59:30,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:59:30,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:59:30,864 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_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2021-11-20 23:59:31,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:59:31,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:59:31,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:59:31,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:59:31,223 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:59:31,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-11-20 23:59:31,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/data/55fb2f0a2/196d053f03e044c08788cd49677bc1c3/FLAG3ebbbcb22 [2021-11-20 23:59:32,111 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:59:32,111 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2021-11-20 23:59:32,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/data/55fb2f0a2/196d053f03e044c08788cd49677bc1c3/FLAG3ebbbcb22 [2021-11-20 23:59:32,659 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/data/55fb2f0a2/196d053f03e044c08788cd49677bc1c3 [2021-11-20 23:59:32,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:59:32,664 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:59:32,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:59:32,669 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:59:32,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:59:32,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:32" (1/1) ... [2021-11-20 23:59:32,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@97d72a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:32, skipping insertion in model container [2021-11-20 23:59:32,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:32" (1/1) ... [2021-11-20 23:59:32,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:59:32,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:59:33,127 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_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-11-20 23:59:33,134 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_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-11-20 23:59:34,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,150 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,151 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,152 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,171 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,173 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,174 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,578 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:59:34,579 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:59:34,580 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:59:34,581 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:59:34,583 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:59:34,584 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:59:34,584 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:59:34,585 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:59:34,586 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:59:34,586 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:59:34,738 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:59:34,799 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,800 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,852 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,977 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,978 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,978 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,979 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,982 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,990 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,991 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,997 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,998 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:34,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,013 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:59:35,044 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:59:35,056 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_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2021-11-20 23:59:35,057 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_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2021-11-20 23:59:35,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,091 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,092 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,098 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,099 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,100 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,101 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,102 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,102 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,132 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 23:59:35,133 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 23:59:35,133 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 23:59:35,134 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 23:59:35,135 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 23:59:35,136 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 23:59:35,136 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 23:59:35,136 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 23:59:35,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 23:59:35,137 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 23:59:35,156 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 23:59:35,173 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,178 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,188 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,260 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,261 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,263 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,263 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,264 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,265 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,266 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,267 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,268 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,269 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,270 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,271 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,275 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,276 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,287 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 23:59:35,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:59:35,539 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:59:35,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35 WrapperNode [2021-11-20 23:59:35,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:59:35,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:59:35,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:59:35,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:59:35,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,727 INFO L137 Inliner]: procedures = 697, calls = 1905, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 840 [2021-11-20 23:59:35,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:59:35,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:59:35,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:59:35,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:59:35,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:59:35,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:59:35,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:59:35,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:59:35,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (1/1) ... [2021-11-20 23:59:35,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:59:35,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:35,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:59:35,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:59:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-20 23:59:35,940 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-20 23:59:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-20 23:59:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-20 23:59:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:59:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 23:59:35,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 23:59:35,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 23:59:35,942 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 23:59:35,942 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 23:59:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 23:59:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 23:59:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 23:59:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 23:59:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:59:35,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:59:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:59:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:59:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:59:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 23:59:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 23:59:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:59:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:59:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 23:59:35,952 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 23:59:35,952 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-11-20 23:59:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-11-20 23:59:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 23:59:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 23:59:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 23:59:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 23:59:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-20 23:59:35,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-20 23:59:35,953 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 23:59:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 23:59:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 23:59:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 23:59:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 23:59:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 23:59:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:59:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:59:35,954 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2021-11-20 23:59:35,954 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2021-11-20 23:59:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 23:59:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-20 23:59:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-20 23:59:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 23:59:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 23:59:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 23:59:35,955 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 23:59:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 23:59:35,955 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:59:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 23:59:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 23:59:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 23:59:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:59:35,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 23:59:35,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 23:59:36,298 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:59:36,300 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:59:37,555 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:59:37,849 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:59:37,849 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-20 23:59:37,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:37 BoogieIcfgContainer [2021-11-20 23:59:37,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:59:37,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:59:37,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:59:37,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:59:37,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:59:32" (1/3) ... [2021-11-20 23:59:37,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db73406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:37, skipping insertion in model container [2021-11-20 23:59:37,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:35" (2/3) ... [2021-11-20 23:59:37,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5db73406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:37, skipping insertion in model container [2021-11-20 23:59:37,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:37" (3/3) ... [2021-11-20 23:59:37,865 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2021-11-20 23:59:37,872 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:59:37,872 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 23:59:37,938 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:59:37,956 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 [2021-11-20 23:59:37,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 23:59:37,987 INFO L276 IsEmpty]: Start isEmpty. Operand has 268 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 140 states have internal predecessors, (166), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-20 23:59:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 23:59:38,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:38,009 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:38,011 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:38,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:38,016 INFO L85 PathProgramCache]: Analyzing trace with hash 224299216, now seen corresponding path program 1 times [2021-11-20 23:59:38,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:38,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996052786] [2021-11-20 23:59:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:38,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-20 23:59:38,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:38,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996052786] [2021-11-20 23:59:38,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996052786] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:59:38,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074667322] [2021-11-20 23:59:38,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:38,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:38,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:38,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 23:59:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:39,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2263 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:59:39,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:39,856 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-20 23:59:39,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:59:39,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074667322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:39,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:59:39,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-20 23:59:39,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645609640] [2021-11-20 23:59:39,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:39,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:59:39,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:39,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:59:39,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:59:39,906 INFO L87 Difference]: Start difference. First operand has 268 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 140 states have internal predecessors, (166), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 23:59:40,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:40,605 INFO L93 Difference]: Finished difference Result 496 states and 723 transitions. [2021-11-20 23:59:40,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:59:40,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 121 [2021-11-20 23:59:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:40,631 INFO L225 Difference]: With dead ends: 496 [2021-11-20 23:59:40,632 INFO L226 Difference]: Without dead ends: 268 [2021-11-20 23:59:40,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:59:40,647 INFO L933 BasicCegarLoop]: 312 mSDtfsCounter, 33 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:40,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 1187 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 23:59:40,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-20 23:59:40,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2021-11-20 23:59:40,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 139 states have (on average 1.1726618705035972) internal successors, (163), 141 states have internal predecessors, (163), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2021-11-20 23:59:40,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 374 transitions. [2021-11-20 23:59:40,764 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 374 transitions. Word has length 121 [2021-11-20 23:59:40,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:40,765 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 374 transitions. [2021-11-20 23:59:40,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-20 23:59:40,765 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 374 transitions. [2021-11-20 23:59:40,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-20 23:59:40,776 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:40,780 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:40,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-20 23:59:41,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-20 23:59:41,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash -725126990, now seen corresponding path program 1 times [2021-11-20 23:59:41,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:41,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297356715] [2021-11-20 23:59:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:41,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-20 23:59:41,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:41,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297356715] [2021-11-20 23:59:41,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297356715] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 23:59:41,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538539652] [2021-11-20 23:59:41,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:41,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:41,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:41,294 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:41,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 23:59:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:41,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:59:41,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:42,191 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-20 23:59:42,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:59:42,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538539652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:42,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 23:59:42,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-20 23:59:42,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051280923] [2021-11-20 23:59:42,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:42,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 23:59:42,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:42,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 23:59:42,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:59:42,195 INFO L87 Difference]: Start difference. First operand 268 states and 374 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 23:59:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:43,018 INFO L93 Difference]: Finished difference Result 507 states and 722 transitions. [2021-11-20 23:59:43,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:59:43,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 129 [2021-11-20 23:59:43,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:43,024 INFO L225 Difference]: With dead ends: 507 [2021-11-20 23:59:43,024 INFO L226 Difference]: Without dead ends: 281 [2021-11-20 23:59:43,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:59:43,027 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 52 mSDsluCounter, 1591 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:43,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1717 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:59:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-20 23:59:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 279. [2021-11-20 23:59:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 147 states have (on average 1.1768707482993197) internal successors, (173), 149 states have internal predecessors, (173), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-11-20 23:59:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 399 transitions. [2021-11-20 23:59:43,058 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 399 transitions. Word has length 129 [2021-11-20 23:59:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:43,059 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 399 transitions. [2021-11-20 23:59:43,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 23:59:43,060 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 399 transitions. [2021-11-20 23:59:43,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-20 23:59:43,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:43,063 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:43,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:59:43,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:43,282 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:43,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:43,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1832344581, now seen corresponding path program 1 times [2021-11-20 23:59:43,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:43,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656118009] [2021-11-20 23:59:43,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:43,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:43,361 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:59:43,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528296449] [2021-11-20 23:59:43,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:43,362 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:43,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:43,363 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:43,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 23:59:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:43,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:59:43,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-20 23:59:44,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:59:44,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656118009] [2021-11-20 23:59:44,274 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:59:44,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528296449] [2021-11-20 23:59:44,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528296449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:44,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:44,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 23:59:44,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25338661] [2021-11-20 23:59:44,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:44,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:59:44,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:59:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:59:44,278 INFO L87 Difference]: Start difference. First operand 279 states and 399 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-20 23:59:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:45,076 INFO L93 Difference]: Finished difference Result 524 states and 759 transitions. [2021-11-20 23:59:45,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:59:45,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 138 [2021-11-20 23:59:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:45,080 INFO L225 Difference]: With dead ends: 524 [2021-11-20 23:59:45,080 INFO L226 Difference]: Without dead ends: 287 [2021-11-20 23:59:45,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-20 23:59:45,083 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 44 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:45,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1474 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:59:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-20 23:59:45,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 279. [2021-11-20 23:59:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 147 states have (on average 1.1768707482993197) internal successors, (173), 149 states have internal predecessors, (173), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-11-20 23:59:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 399 transitions. [2021-11-20 23:59:45,107 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 399 transitions. Word has length 138 [2021-11-20 23:59:45,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:45,108 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 399 transitions. [2021-11-20 23:59:45,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-20 23:59:45,108 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 399 transitions. [2021-11-20 23:59:45,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-20 23:59:45,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:45,111 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:45,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:59:45,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:45,338 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:45,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:45,339 INFO L85 PathProgramCache]: Analyzing trace with hash -714253592, now seen corresponding path program 1 times [2021-11-20 23:59:45,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:45,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900265325] [2021-11-20 23:59:45,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:45,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:45,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:59:45,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488786159] [2021-11-20 23:59:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:45,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:45,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:45,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:45,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 23:59:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:59:45,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:59:45,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-20 23:59:46,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:59:46,351 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:46,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900265325] [2021-11-20 23:59:46,351 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:59:46,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488786159] [2021-11-20 23:59:46,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488786159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:46,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:46,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-20 23:59:46,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102318311] [2021-11-20 23:59:46,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:46,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:59:46,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:46,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:59:46,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:59:46,354 INFO L87 Difference]: Start difference. First operand 279 states and 399 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-20 23:59:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:47,156 INFO L93 Difference]: Finished difference Result 526 states and 760 transitions. [2021-11-20 23:59:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 23:59:47,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 146 [2021-11-20 23:59:47,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:47,162 INFO L225 Difference]: With dead ends: 526 [2021-11-20 23:59:47,162 INFO L226 Difference]: Without dead ends: 289 [2021-11-20 23:59:47,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-20 23:59:47,165 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 67 mSDsluCounter, 1901 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:47,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 1995 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:59:47,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-20 23:59:47,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 279. [2021-11-20 23:59:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 147 states have (on average 1.1768707482993197) internal successors, (173), 149 states have internal predecessors, (173), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2021-11-20 23:59:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 399 transitions. [2021-11-20 23:59:47,186 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 399 transitions. Word has length 146 [2021-11-20 23:59:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:47,187 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 399 transitions. [2021-11-20 23:59:47,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-11-20 23:59:47,187 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 399 transitions. [2021-11-20 23:59:47,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-20 23:59:47,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:47,190 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:47,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:59:47,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:47,406 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:47,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:47,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1735404133, now seen corresponding path program 2 times [2021-11-20 23:59:47,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:47,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322326727] [2021-11-20 23:59:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:47,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:47,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:59:47,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765735128] [2021-11-20 23:59:47,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:59:47,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:47,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:47,471 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:47,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 23:59:47,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-20 23:59:47,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:59:47,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1894 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:59:47,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-20 23:59:48,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 23:59:48,214 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:48,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322326727] [2021-11-20 23:59:48,215 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:59:48,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765735128] [2021-11-20 23:59:48,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765735128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 23:59:48,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:59:48,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 23:59:48,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560035470] [2021-11-20 23:59:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 23:59:48,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:59:48,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-20 23:59:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:59:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:59:48,217 INFO L87 Difference]: Start difference. First operand 279 states and 399 transitions. Second operand has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:59:48,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:59:48,668 INFO L93 Difference]: Finished difference Result 483 states and 705 transitions. [2021-11-20 23:59:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:59:48,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 155 [2021-11-20 23:59:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:59:48,672 INFO L225 Difference]: With dead ends: 483 [2021-11-20 23:59:48,672 INFO L226 Difference]: Without dead ends: 279 [2021-11-20 23:59:48,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:59:48,675 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 0 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:59:48,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1201 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 23:59:48,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-20 23:59:48,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-11-20 23:59:48,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 147 states have (on average 1.1768707482993197) internal successors, (173), 149 states have internal predecessors, (173), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (119), 106 states have call predecessors, (119), 105 states have call successors, (119) [2021-11-20 23:59:48,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 398 transitions. [2021-11-20 23:59:48,695 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 398 transitions. Word has length 155 [2021-11-20 23:59:48,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:59:48,696 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 398 transitions. [2021-11-20 23:59:48,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 19.0) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 23:59:48,697 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 398 transitions. [2021-11-20 23:59:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-20 23:59:48,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:59:48,700 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:59:48,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:59:48,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:48,924 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 23:59:48,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:59:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash -54764672, now seen corresponding path program 3 times [2021-11-20 23:59:48,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-20 23:59:48,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836458396] [2021-11-20 23:59:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:59:48,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 23:59:48,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 23:59:48,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594459618] [2021-11-20 23:59:48,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-20 23:59:49,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:59:49,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:59:49,001 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:59:49,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c240b271-60a6-4d1f-a6b5-a3ef311fc2bf/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-20 23:59:49,232 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-20 23:59:49,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:59:49,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-20 23:59:49,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:59:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-20 23:59:49,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:59:50,435 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-20 23:59:50,435 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-20 23:59:50,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836458396] [2021-11-20 23:59:50,435 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 23:59:50,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594459618] [2021-11-20 23:59:50,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594459618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:59:50,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1180088382] [2021-11-20 23:59:50,473 INFO L159 IcfgInterpreter]: Started Sifa with 91 locations of interest [2021-11-20 23:59:50,473 INFO L166 IcfgInterpreter]: Building call graph [2021-11-20 23:59:50,478 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-20 23:59:50,484 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-20 23:59:50,484 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-20 23:59:59,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 23:59:59,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:00,221 INFO L244 Elim1Store]: Index analysis took 353 ms [2021-11-21 00:00:35,220 WARN L227 SmtUtils]: Spent 34.89s on a formula simplification. DAG size of input: 2150 DAG size of output: 1173 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:00:35,226 INFO L354 Elim1Store]: treesize reduction 3510, result has 33.3 percent of original size [2021-11-21 00:00:35,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19506 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 390 case distinctions, treesize of input 1002 treesize of output 2373 [2021-11-21 00:00:53,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 00:00:53,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19503 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 0 case distinctions, treesize of input 992 treesize of output 1582