./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_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_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/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_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/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_87e66538-0c2b-46bd-8470-373950451738/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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:19:09,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:19:09,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:19:09,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:19:09,773 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:19:09,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:19:09,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:19:09,784 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:19:09,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:19:09,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:19:09,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:19:09,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:19:09,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:19:09,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:19:09,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:19:09,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:19:09,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:19:09,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:19:09,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:19:09,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:19:09,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:19:09,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:19:09,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:19:09,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:19:09,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:19:09,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:19:09,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:19:09,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:19:09,842 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:19:09,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:19:09,844 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:19:09,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:19:09,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:19:09,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:19:09,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:19:09,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:19:09,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:19:09,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:19:09,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:19:09,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:19:09,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:19:09,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:19:09,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:19:09,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:19:09,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:19:09,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:19:09,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:19:09,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:19:09,892 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:19:09,892 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:19:09,893 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:19:09,893 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:19:09,893 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:19:09,893 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:19:09,893 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:19:09,894 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:19:09,894 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:19:09,894 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:19:09,895 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:19:09,895 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:19:09,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:19:09,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:19:09,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:19:09,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:19:09,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:19:09,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:19:09,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:19:09,897 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:19:09,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:19:09,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:19:09,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:19:09,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:19:09,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:19:09,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:19:09,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:19:09,899 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:19:09,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:19:09,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:19:09,900 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:19:09,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:19:09,900 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_87e66538-0c2b-46bd-8470-373950451738/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-21 01:19:10,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:19:10,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:19:10,215 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:19:10,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:19:10,217 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:19:10,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-21 01:19:10,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/data/43ae1a7d1/25435d8a0b94457e95b2455e0e9c83e3/FLAGd53af8324 [2021-11-21 01:19:11,137 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:19:11,138 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-21 01:19:11,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/data/43ae1a7d1/25435d8a0b94457e95b2455e0e9c83e3/FLAGd53af8324 [2021-11-21 01:19:11,603 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/data/43ae1a7d1/25435d8a0b94457e95b2455e0e9c83e3 [2021-11-21 01:19:11,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:19:11,607 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:19:11,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:19:11,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:19:11,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:19:11,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:19:11" (1/1) ... [2021-11-21 01:19:11,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a8da3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:11, skipping insertion in model container [2021-11-21 01:19:11,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:19:11" (1/1) ... [2021-11-21 01:19:11,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:19:11,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:19:12,029 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_87e66538-0c2b-46bd-8470-373950451738/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-21 01:19:12,037 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_87e66538-0c2b-46bd-8470-373950451738/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-21 01:19:13,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,200 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,201 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,202 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,209 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,233 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,233 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,235 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,236 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,237 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,241 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,242 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:13,780 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:19:13,783 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:19:13,786 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:19:13,788 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:19:13,790 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:19:13,791 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:19:13,792 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:19:13,792 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:19:13,805 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:19:13,806 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:19:14,078 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:19:14,492 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,541 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,547 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,568 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:19:14,672 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:19:14,699 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_87e66538-0c2b-46bd-8470-373950451738/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-21 01:19:14,699 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_87e66538-0c2b-46bd-8470-373950451738/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-21 01:19:14,794 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,796 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,797 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,798 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,811 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,812 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,813 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,813 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,814 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,814 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:14,847 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:19:14,851 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:19:14,851 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:19:14,852 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:19:14,853 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:19:14,853 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:19:14,854 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:19:14,854 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:19:14,855 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:19:14,855 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:19:14,878 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:19:15,005 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,005 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,013 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,014 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,017 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,017 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,032 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,033 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,034 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,035 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:19:15,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:19:15,453 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:19:15,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15 WrapperNode [2021-11-21 01:19:15,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:19:15,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:19:15,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:19:15,455 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:19:15,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,749 INFO L137 Inliner]: procedures = 775, calls = 2499, calls flagged for inlining = 69, calls inlined = 19, statements flattened = 1070 [2021-11-21 01:19:15,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:19:15,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:19:15,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:19:15,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:19:15,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,928 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:19:15,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:19:15,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:19:15,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:19:15,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (1/1) ... [2021-11-21 01:19:15,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:19:15,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:15,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:19:15,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:19:16,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-21 01:19:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 01:19:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 01:19:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:19:16,011 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 01:19:16,011 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 01:19:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:19:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:19:16,012 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-21 01:19:16,012 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-21 01:19:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:19:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:19:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:19:16,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:19:16,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:19:16,014 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 01:19:16,014 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 01:19:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 01:19:16,015 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 01:19:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:19:16,015 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-21 01:19:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-21 01:19:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:19:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-21 01:19:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-21 01:19:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:19:16,016 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-21 01:19:16,016 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-21 01:19:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-21 01:19:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-21 01:19:16,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-21 01:19:16,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-21 01:19:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-21 01:19:16,018 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-21 01:19:16,018 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-21 01:19:16,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-21 01:19:16,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:19:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-21 01:19:16,022 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-21 01:19:16,022 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-21 01:19:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:19:16,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:19:16,023 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-21 01:19:16,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-21 01:19:16,024 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-21 01:19:16,030 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-21 01:19:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-21 01:19:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-21 01:19:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:19:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:19:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-21 01:19:16,031 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-21 01:19:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:19:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 01:19:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 01:19:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 01:19:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 01:19:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-21 01:19:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-21 01:19:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2021-11-21 01:19:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2021-11-21 01:19:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-21 01:19:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-21 01:19:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-11-21 01:19:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-11-21 01:19:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:19:16,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:19:16,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:19:16,571 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:19:16,574 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:19:16,848 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2021-11-21 01:19:16,848 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2021-11-21 01:19:16,892 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-21 01:19:16,940 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-21 01:19:18,091 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##38: assume !true; [2021-11-21 01:19:18,092 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !true; [2021-11-21 01:19:18,121 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:19:18,281 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:19:18,281 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-21 01:19:18,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:19:18 BoogieIcfgContainer [2021-11-21 01:19:18,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:19:18,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:19:18,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:19:18,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:19:18,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:19:11" (1/3) ... [2021-11-21 01:19:18,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2daa7b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:19:18, skipping insertion in model container [2021-11-21 01:19:18,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:19:15" (2/3) ... [2021-11-21 01:19:18,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2daa7b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:19:18, skipping insertion in model container [2021-11-21 01:19:18,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:19:18" (3/3) ... [2021-11-21 01:19:18,295 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness.i [2021-11-21 01:19:18,301 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:19:18,302 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-21 01:19:18,368 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:19:18,380 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:19:18,380 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-21 01:19:18,415 INFO L276 IsEmpty]: Start isEmpty. Operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-21 01:19:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-21 01:19:18,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:18,432 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:18,433 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:18,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:18,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1987443898, now seen corresponding path program 1 times [2021-11-21 01:19:18,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934921842] [2021-11-21 01:19:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:18,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:18,903 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:19:18,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228436639] [2021-11-21 01:19:18,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:18,905 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:18,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:18,911 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:18,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:19:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:19,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2374 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:19:19,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:19,939 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-21 01:19:19,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:19:19,941 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:19,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934921842] [2021-11-21 01:19:19,941 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:19:19,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228436639] [2021-11-21 01:19:19,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228436639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:19,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:19,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:19:19,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750856545] [2021-11-21 01:19:19,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:19,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:19:19,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:19:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:19:19,988 INFO L87 Difference]: Start difference. First operand has 259 states, 149 states have (on average 1.221476510067114) internal successors, (182), 144 states have internal predecessors, (182), 87 states have call successors, (87), 27 states have call predecessors, (87), 27 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:19:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:20,721 INFO L93 Difference]: Finished difference Result 488 states and 698 transitions. [2021-11-21 01:19:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:19:20,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 127 [2021-11-21 01:19:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:20,735 INFO L225 Difference]: With dead ends: 488 [2021-11-21 01:19:20,735 INFO L226 Difference]: Without dead ends: 259 [2021-11-21 01:19:20,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:19:20,745 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 1 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:20,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1208 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:19:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-11-21 01:19:20,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2021-11-21 01:19:20,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 143 states have (on average 1.1888111888111887) internal successors, (170), 145 states have internal predecessors, (170), 87 states have call successors, (87), 27 states have call predecessors, (87), 28 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2021-11-21 01:19:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 343 transitions. [2021-11-21 01:19:20,816 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 343 transitions. Word has length 127 [2021-11-21 01:19:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:20,817 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 343 transitions. [2021-11-21 01:19:20,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.75) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-21 01:19:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 343 transitions. [2021-11-21 01:19:20,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-21 01:19:20,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:20,822 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:20,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:19:21,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:21,047 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:21,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1602005392, now seen corresponding path program 1 times [2021-11-21 01:19:21,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:21,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557547477] [2021-11-21 01:19:21,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:21,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:21,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-21 01:19:21,593 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:21,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557547477] [2021-11-21 01:19:21,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557547477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:21,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:21,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-21 01:19:21,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436785938] [2021-11-21 01:19:21,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:21,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:19:21,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:19:21,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:19:21,600 INFO L87 Difference]: Start difference. First operand 259 states and 343 transitions. Second operand has 5 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:19:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:22,099 INFO L93 Difference]: Finished difference Result 434 states and 584 transitions. [2021-11-21 01:19:22,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:19:22,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) Word has length 131 [2021-11-21 01:19:22,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:22,108 INFO L225 Difference]: With dead ends: 434 [2021-11-21 01:19:22,108 INFO L226 Difference]: Without dead ends: 262 [2021-11-21 01:19:22,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:19:22,114 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:22,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1078 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:19:22,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-21 01:19:22,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 261. [2021-11-21 01:19:22,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 144 states have (on average 1.1875) internal successors, (171), 147 states have internal predecessors, (171), 87 states have call successors, (87), 27 states have call predecessors, (87), 29 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2021-11-21 01:19:22,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 351 transitions. [2021-11-21 01:19:22,170 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 351 transitions. Word has length 131 [2021-11-21 01:19:22,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:22,171 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 351 transitions. [2021-11-21 01:19:22,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 16.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-21 01:19:22,171 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 351 transitions. [2021-11-21 01:19:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-21 01:19:22,173 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:22,174 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:22,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:19:22,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:22,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2076489748, now seen corresponding path program 1 times [2021-11-21 01:19:22,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:22,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288724793] [2021-11-21 01:19:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:22,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-21 01:19:22,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:22,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288724793] [2021-11-21 01:19:22,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288724793] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:22,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899515318] [2021-11-21 01:19:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:22,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:22,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:22,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:22,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:19:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:23,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-21 01:19:23,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:23,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 01:19:24,314 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-21 01:19:24,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:19:24,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899515318] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:24,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:19:24,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 14 [2021-11-21 01:19:24,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899547744] [2021-11-21 01:19:24,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:24,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:19:24,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:24,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:19:24,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:19:24,318 INFO L87 Difference]: Start difference. First operand 261 states and 351 transitions. Second operand has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-21 01:19:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:25,022 INFO L93 Difference]: Finished difference Result 476 states and 646 transitions. [2021-11-21 01:19:25,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:19:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 135 [2021-11-21 01:19:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:25,026 INFO L225 Difference]: With dead ends: 476 [2021-11-21 01:19:25,026 INFO L226 Difference]: Without dead ends: 263 [2021-11-21 01:19:25,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:19:25,028 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 40 mSDsluCounter, 1995 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:25,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 2090 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 287 Invalid, 0 Unknown, 210 Unchecked, 0.6s Time] [2021-11-21 01:19:25,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-21 01:19:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2021-11-21 01:19:25,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 146 states have (on average 1.1849315068493151) internal successors, (173), 148 states have internal predecessors, (173), 87 states have call successors, (87), 28 states have call predecessors, (87), 29 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2021-11-21 01:19:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 353 transitions. [2021-11-21 01:19:25,064 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 353 transitions. Word has length 135 [2021-11-21 01:19:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:25,065 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 353 transitions. [2021-11-21 01:19:25,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-11-21 01:19:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 353 transitions. [2021-11-21 01:19:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-21 01:19:25,068 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:25,068 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:25,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:19:25,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:25,291 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:25,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1309101116, now seen corresponding path program 1 times [2021-11-21 01:19:25,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:25,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511312331] [2021-11-21 01:19:25,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:25,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-21 01:19:25,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:25,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511312331] [2021-11-21 01:19:25,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511312331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:25,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280950754] [2021-11-21 01:19:25,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:25,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:25,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:25,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:25,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:19:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:26,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 01:19:26,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:26,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-21 01:19:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-21 01:19:26,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:19:26,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280950754] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:26,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:19:26,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 20 [2021-11-21 01:19:26,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167853635] [2021-11-21 01:19:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:26,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-21 01:19:26,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-21 01:19:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:19:26,895 INFO L87 Difference]: Start difference. First operand 263 states and 353 transitions. Second operand has 12 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-21 01:19:27,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:27,289 INFO L93 Difference]: Finished difference Result 482 states and 653 transitions. [2021-11-21 01:19:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:19:27,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) Word has length 141 [2021-11-21 01:19:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:27,293 INFO L225 Difference]: With dead ends: 482 [2021-11-21 01:19:27,293 INFO L226 Difference]: Without dead ends: 266 [2021-11-21 01:19:27,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:19:27,296 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 43 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:27,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1388 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 145 Unchecked, 0.3s Time] [2021-11-21 01:19:27,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-21 01:19:27,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-11-21 01:19:27,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 150 states have internal predecessors, (175), 88 states have call successors, (88), 29 states have call predecessors, (88), 29 states have return successors, (94), 86 states have call predecessors, (94), 86 states have call successors, (94) [2021-11-21 01:19:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 357 transitions. [2021-11-21 01:19:27,317 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 357 transitions. Word has length 141 [2021-11-21 01:19:27,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:27,318 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 357 transitions. [2021-11-21 01:19:27,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.444444444444445) internal successors, (58), 10 states have internal predecessors, (58), 5 states have call successors, (34), 3 states have call predecessors, (34), 5 states have return successors, (32), 5 states have call predecessors, (32), 5 states have call successors, (32) [2021-11-21 01:19:27,318 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 357 transitions. [2021-11-21 01:19:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-21 01:19:27,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:27,321 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:27,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:19:27,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:27,546 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:27,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:27,546 INFO L85 PathProgramCache]: Analyzing trace with hash -220983736, now seen corresponding path program 1 times [2021-11-21 01:19:27,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:27,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744780485] [2021-11-21 01:19:27,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:27,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-21 01:19:28,097 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:28,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744780485] [2021-11-21 01:19:28,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744780485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:28,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056638898] [2021-11-21 01:19:28,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:28,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:28,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:28,099 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:28,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:19:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:28,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2471 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-21 01:19:28,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:29,032 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-11-21 01:19:29,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:19:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-11-21 01:19:29,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056638898] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:29,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:19:29,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 7] total 20 [2021-11-21 01:19:29,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910251562] [2021-11-21 01:19:29,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:29,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:19:29,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:29,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:19:29,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:19:29,509 INFO L87 Difference]: Start difference. First operand 266 states and 357 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-21 01:19:30,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:30,090 INFO L93 Difference]: Finished difference Result 274 states and 364 transitions. [2021-11-21 01:19:30,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:19:30,091 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) Word has length 145 [2021-11-21 01:19:30,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:30,094 INFO L225 Difference]: With dead ends: 274 [2021-11-21 01:19:30,094 INFO L226 Difference]: Without dead ends: 272 [2021-11-21 01:19:30,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:19:30,096 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 9 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:30,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1174 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-21 01:19:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-21 01:19:30,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2021-11-21 01:19:30,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 151 states have (on average 1.1788079470198676) internal successors, (178), 153 states have internal predecessors, (178), 88 states have call successors, (88), 30 states have call predecessors, (88), 30 states have return successors, (94), 86 states have call predecessors, (94), 86 states have call successors, (94) [2021-11-21 01:19:30,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 360 transitions. [2021-11-21 01:19:30,122 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 360 transitions. Word has length 145 [2021-11-21 01:19:30,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:30,124 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 360 transitions. [2021-11-21 01:19:30,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (32), 1 states have call predecessors, (32), 1 states have call successors, (32) [2021-11-21 01:19:30,124 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 360 transitions. [2021-11-21 01:19:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-21 01:19:30,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:30,128 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:30,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:19:30,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:30,355 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:30,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2902764, now seen corresponding path program 1 times [2021-11-21 01:19:30,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:30,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629955530] [2021-11-21 01:19:30,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:30,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:30,847 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2021-11-21 01:19:30,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:30,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629955530] [2021-11-21 01:19:30,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629955530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:30,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:19:30,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-21 01:19:30,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595752369] [2021-11-21 01:19:30,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:30,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-21 01:19:30,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:30,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-21 01:19:30,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:19:30,849 INFO L87 Difference]: Start difference. First operand 270 states and 360 transitions. Second operand has 13 states, 10 states have (on average 6.2) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 7 states have call successors, (35) [2021-11-21 01:19:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:31,986 INFO L93 Difference]: Finished difference Result 477 states and 649 transitions. [2021-11-21 01:19:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-21 01:19:31,986 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 6.2) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 7 states have call successors, (35) Word has length 154 [2021-11-21 01:19:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:31,990 INFO L225 Difference]: With dead ends: 477 [2021-11-21 01:19:31,990 INFO L226 Difference]: Without dead ends: 291 [2021-11-21 01:19:31,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:19:31,992 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 113 mSDsluCounter, 2605 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 2587 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:31,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 2587 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-21 01:19:31,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-21 01:19:32,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 272. [2021-11-21 01:19:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 152 states have (on average 1.1776315789473684) internal successors, (179), 155 states have internal predecessors, (179), 88 states have call successors, (88), 30 states have call predecessors, (88), 31 states have return successors, (98), 86 states have call predecessors, (98), 86 states have call successors, (98) [2021-11-21 01:19:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 365 transitions. [2021-11-21 01:19:32,016 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 365 transitions. Word has length 154 [2021-11-21 01:19:32,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:32,017 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 365 transitions. [2021-11-21 01:19:32,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 6.2) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (37), 3 states have call predecessors, (37), 3 states have return successors, (35), 5 states have call predecessors, (35), 7 states have call successors, (35) [2021-11-21 01:19:32,017 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 365 transitions. [2021-11-21 01:19:32,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-21 01:19:32,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:32,020 INFO L514 BasicCegarLoop]: trace histogram [15, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:32,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-21 01:19:32,021 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:32,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1949400668, now seen corresponding path program 1 times [2021-11-21 01:19:32,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:32,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143005611] [2021-11-21 01:19:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:32,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:32,527 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-11-21 01:19:32,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:32,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143005611] [2021-11-21 01:19:32,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143005611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:32,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030206612] [2021-11-21 01:19:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:32,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:32,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:32,529 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:32,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:19:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:33,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2523 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-21 01:19:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:34,469 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-21 01:19:34,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:19:34,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030206612] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:19:34,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:19:34,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2021-11-21 01:19:34,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666553643] [2021-11-21 01:19:34,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:34,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:19:34,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:34,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:19:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:19:34,473 INFO L87 Difference]: Start difference. First operand 272 states and 365 transitions. Second operand has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 5 states have call successors, (36) [2021-11-21 01:19:34,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:34,957 INFO L93 Difference]: Finished difference Result 470 states and 642 transitions. [2021-11-21 01:19:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:19:34,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 5 states have call successors, (36) Word has length 160 [2021-11-21 01:19:34,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:34,961 INFO L225 Difference]: With dead ends: 470 [2021-11-21 01:19:34,961 INFO L226 Difference]: Without dead ends: 274 [2021-11-21 01:19:34,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2021-11-21 01:19:34,963 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 65 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 219 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:34,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 1827 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 191 Invalid, 0 Unknown, 219 Unchecked, 0.4s Time] [2021-11-21 01:19:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-21 01:19:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 271. [2021-11-21 01:19:34,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 152 states have (on average 1.1776315789473684) internal successors, (179), 154 states have internal predecessors, (179), 87 states have call successors, (87), 30 states have call predecessors, (87), 31 states have return successors, (96), 86 states have call predecessors, (96), 85 states have call successors, (96) [2021-11-21 01:19:34,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 362 transitions. [2021-11-21 01:19:34,984 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 362 transitions. Word has length 160 [2021-11-21 01:19:34,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:34,985 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 362 transitions. [2021-11-21 01:19:34,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 5 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 3 states have call predecessors, (36), 5 states have call successors, (36) [2021-11-21 01:19:34,986 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 362 transitions. [2021-11-21 01:19:34,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-21 01:19:34,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:34,988 INFO L514 BasicCegarLoop]: trace histogram [15, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:35,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:19:35,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 01:19:35,191 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:35,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:35,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1691924128, now seen corresponding path program 2 times [2021-11-21 01:19:35,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:35,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642114772] [2021-11-21 01:19:35,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:35,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2021-11-21 01:19:35,670 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:35,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642114772] [2021-11-21 01:19:35,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642114772] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:35,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841767646] [2021-11-21 01:19:35,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:19:35,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:35,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:35,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:35,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:19:36,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-21 01:19:36,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:19:36,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1901 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-21 01:19:36,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-21 01:19:36,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:19:37,078 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 258 trivial. 0 not checked. [2021-11-21 01:19:37,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841767646] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:37,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-21 01:19:37,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13, 8] total 20 [2021-11-21 01:19:37,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001850694] [2021-11-21 01:19:37,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:19:37,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:19:37,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:19:37,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:19:37,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2021-11-21 01:19:37,081 INFO L87 Difference]: Start difference. First operand 271 states and 362 transitions. Second operand has 5 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-21 01:19:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:19:37,507 INFO L93 Difference]: Finished difference Result 279 states and 369 transitions. [2021-11-21 01:19:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:19:37,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 164 [2021-11-21 01:19:37,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:19:37,511 INFO L225 Difference]: With dead ends: 279 [2021-11-21 01:19:37,511 INFO L226 Difference]: Without dead ends: 277 [2021-11-21 01:19:37,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:19:37,513 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 6 mSDsluCounter, 995 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:19:37,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1180 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:19:37,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-21 01:19:37,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2021-11-21 01:19:37,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 155 states have (on average 1.1741935483870967) internal successors, (182), 157 states have internal predecessors, (182), 87 states have call successors, (87), 31 states have call predecessors, (87), 32 states have return successors, (96), 86 states have call predecessors, (96), 85 states have call successors, (96) [2021-11-21 01:19:37,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 365 transitions. [2021-11-21 01:19:37,550 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 365 transitions. Word has length 164 [2021-11-21 01:19:37,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:19:37,551 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 365 transitions. [2021-11-21 01:19:37,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2021-11-21 01:19:37,552 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 365 transitions. [2021-11-21 01:19:37,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-21 01:19:37,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:19:37,555 INFO L514 BasicCegarLoop]: trace histogram [15, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:19:37,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:19:37,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:37,771 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:19:37,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:19:37,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1453411431, now seen corresponding path program 1 times [2021-11-21 01:19:37,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:19:37,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724628006] [2021-11-21 01:19:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:37,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:19:37,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-11-21 01:19:38,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:19:38,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724628006] [2021-11-21 01:19:38,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724628006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:19:38,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222728306] [2021-11-21 01:19:38,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:19:38,265 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:19:38,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:19:38,267 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:19:38,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87e66538-0c2b-46bd-8470-373950451738/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:19:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:19:38,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-21 01:19:38,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:19:39,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-21 01:19:44,299 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-21 01:19:44,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 29 [2021-11-21 01:19:44,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:44,604 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 01:19:45,319 INFO L354 Elim1Store]: treesize reduction 851, result has 24.2 percent of original size [2021-11-21 01:19:45,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 6 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 11 new quantified variables, introduced 18 case distinctions, treesize of input 1749 treesize of output 722 [2021-11-21 01:19:45,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7240 treesize of output 6728 [2021-11-21 01:19:45,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:45,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:45,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:45,876 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:19:45,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 851 treesize of output 961 [2021-11-21 01:19:48,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:48,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:48,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:48,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:49,072 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:19:49,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 5 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 645 treesize of output 781 [2021-11-21 01:19:51,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:51,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:51,425 INFO L354 Elim1Store]: treesize reduction 36, result has 85.2 percent of original size [2021-11-21 01:19:51,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 4672 treesize of output 4788 [2021-11-21 01:19:51,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:51,732 INFO L354 Elim1Store]: treesize reduction 44, result has 81.9 percent of original size [2021-11-21 01:19:51,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 2 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 4788 treesize of output 4832 [2021-11-21 01:19:51,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:51,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:19:52,013 INFO L354 Elim1Store]: treesize reduction 28, result has 88.5 percent of original size [2021-11-21 01:19:52,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 4832 treesize of output 4956