./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF --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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:08:38,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:08:38,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:08:38,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:08:38,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:08:38,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:08:38,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:08:38,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:08:38,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:08:38,643 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:08:38,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:08:38,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:08:38,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:08:38,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:08:38,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:08:38,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:08:38,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:08:38,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:08:38,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:08:38,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:08:38,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:08:38,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:08:38,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:08:38,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:08:38,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:08:38,671 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:08:38,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:08:38,673 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:08:38,674 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:08:38,676 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:08:38,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:08:38,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:08:38,679 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:08:38,680 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:08:38,681 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:08:38,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:08:38,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:08:38,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:08:38,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:08:38,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:08:38,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:08:38,686 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:08:38,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:08:38,732 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:08:38,734 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:08:38,734 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:08:38,734 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:08:38,735 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:08:38,735 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:08:38,735 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:08:38,740 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:08:38,740 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:08:38,741 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:08:38,741 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:08:38,741 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:08:38,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:08:38,742 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:08:38,742 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:08:38,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:08:38,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:08:38,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:08:38,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:08:38,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:08:38,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:08:38,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:08:38,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:08:38,747 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:08:38,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:08:38,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:08:38,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:08:38,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:08:38,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:08:38,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:08:38,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:08:38,750 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:08:38,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:08:38,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:08:38,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:08:38,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:08:38,752 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-11-12 23:08:39,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:08:39,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:08:39,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:08:39,032 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:08:39,033 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:08:39,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-12 23:08:39,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data/6a8a6398c/4529e7da5b094959a918a08f7ba06132/FLAG59c1ad005 [2021-11-12 23:08:40,081 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:08:40,081 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-12 23:08:40,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data/6a8a6398c/4529e7da5b094959a918a08f7ba06132/FLAG59c1ad005 [2021-11-12 23:08:40,485 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data/6a8a6398c/4529e7da5b094959a918a08f7ba06132 [2021-11-12 23:08:40,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:08:40,489 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:08:40,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:08:40,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:08:40,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:08:40,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:08:40" (1/1) ... [2021-11-12 23:08:40,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@452f2935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:40, skipping insertion in model container [2021-11-12 23:08:40,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:08:40" (1/1) ... [2021-11-12 23:08:40,502 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:08:40,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:08:40,937 WARN L228 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-12 23:08:40,945 WARN L228 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-12 23:08:40,973 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:08:40,980 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:08:42,367 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,368 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,369 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,371 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,386 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,387 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,389 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,390 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,392 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,394 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:42,872 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:08:42,873 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:08:42,875 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:08:42,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:08:42,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:08:42,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:08:42,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:08:42,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:08:42,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:08:42,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:08:43,134 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:08:43,585 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,588 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,629 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,631 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,639 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,640 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,674 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,675 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:43,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:08:43,797 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:08:43,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b841a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:43, skipping insertion in model container [2021-11-12 23:08:43,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:08:43,799 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:08:43,801 INFO L158 Benchmark]: Toolchain (without parser) took 3310.69ms. Allocated memory was 104.9MB in the beginning and 146.8MB in the end (delta: 41.9MB). Free memory was 75.9MB in the beginning and 82.4MB in the end (delta: -6.4MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-11-12 23:08:43,802 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:08:43,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3308.46ms. Allocated memory was 104.9MB in the beginning and 146.8MB in the end (delta: 41.9MB). Free memory was 75.6MB in the beginning and 82.4MB in the end (delta: -6.7MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2021-11-12 23:08:43,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3308.46ms. Allocated memory was 104.9MB in the beginning and 146.8MB in the end (delta: 41.9MB). Free memory was 75.6MB in the beginning and 82.4MB in the end (delta: -6.7MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF --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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:08:46,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:08:46,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:08:46,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:08:46,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:08:46,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:08:46,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:08:46,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:08:46,276 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:08:46,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:08:46,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:08:46,288 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:08:46,288 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:08:46,291 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:08:46,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:08:46,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:08:46,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:08:46,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:08:46,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:08:46,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:08:46,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:08:46,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:08:46,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:08:46,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:08:46,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:08:46,329 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:08:46,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:08:46,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:08:46,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:08:46,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:08:46,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:08:46,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:08:46,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:08:46,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:08:46,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:08:46,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:08:46,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:08:46,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:08:46,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:08:46,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:08:46,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:08:46,350 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:08:46,390 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:08:46,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:08:46,392 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:08:46,392 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:08:46,392 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:08:46,393 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:08:46,393 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:08:46,393 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:08:46,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:08:46,394 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:08:46,396 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:08:46,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:08:46,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:08:46,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:08:46,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:08:46,397 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:08:46,397 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:08:46,398 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:08:46,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:08:46,398 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:08:46,398 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:08:46,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:08:46,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:08:46,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:08:46,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:08:46,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:08:46,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:08:46,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:08:46,400 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:08:46,401 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:08:46,401 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:08:46,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:08:46,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:08:46,401 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-11-12 23:08:46,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:08:46,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:08:46,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:08:46,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:08:46,886 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:08:46,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-12 23:08:46,962 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data/2bfa4937f/0afd551cd8404ea4aa4e21af8f9b39ea/FLAG37bb53f19 [2021-11-12 23:08:47,918 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:08:47,919 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-12 23:08:47,975 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data/2bfa4937f/0afd551cd8404ea4aa4e21af8f9b39ea/FLAG37bb53f19 [2021-11-12 23:08:48,307 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/data/2bfa4937f/0afd551cd8404ea4aa4e21af8f9b39ea [2021-11-12 23:08:48,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:08:48,312 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:08:48,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:08:48,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:08:48,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:08:48,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:08:48" (1/1) ... [2021-11-12 23:08:48,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f5f4172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:48, skipping insertion in model container [2021-11-12 23:08:48,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:08:48" (1/1) ... [2021-11-12 23:08:48,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:08:48,478 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:08:48,770 WARN L228 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-12 23:08:48,776 WARN L228 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-12 23:08:48,803 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:08:48,811 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:08:50,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,231 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,232 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,234 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,262 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,274 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:50,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:08:50,978 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:08:50,980 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:08:50,981 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:08:50,982 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:08:50,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:08:50,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:08:50,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:08:50,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:08:50,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:08:51,191 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:08:51,615 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,615 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,639 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,660 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,661 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,662 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,662 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,663 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,663 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:08:51,730 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:08:51,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:08:51,792 WARN L228 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-12 23:08:51,793 WARN L228 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-12 23:08:51,795 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:08:51,795 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:08:51,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,855 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,858 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,858 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,859 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,859 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:51,897 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:08:51,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:08:51,899 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:08:51,900 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:08:51,901 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:08:51,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:08:51,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:08:51,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:08:51,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:08:51,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:08:51,930 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:08:52,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,087 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,088 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,091 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,092 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,107 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,110 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,111 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:08:52,181 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:08:52,209 WARN L228 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-12 23:08:52,210 WARN L228 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_f99b5611-e289-46f6-81c0-a19d73aff6a7/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-12 23:08:52,211 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:08:52,212 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:08:52,275 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,288 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,324 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:08:52,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:08:52,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:08:52,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:08:52,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:08:52,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:08:52,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:08:52,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:08:52,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:08:52,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:08:52,356 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:08:52,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,500 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,516 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,535 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,536 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,536 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,537 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,538 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:08:52,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:08:53,041 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:08:53,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53 WrapperNode [2021-11-12 23:08:53,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:08:53,043 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:08:53,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:08:53,044 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:08:53,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,254 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:08:53,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:08:53,255 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:08:53,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:08:53,264 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:08:53,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:08:53,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:08:53,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:08:53,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (1/1) ... [2021-11-12 23:08:53,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:08:53,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:08:53,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:08:53,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:08:53,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 23:08:53,503 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:08:53,503 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:08:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:08:53,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:08:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-12 23:08:53,510 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-12 23:08:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:08:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:08:53,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:08:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:08:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 23:08:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 23:08:53,511 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 23:08:53,511 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 23:08:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-12 23:08:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:08:53,512 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:08:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:08:53,512 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-12 23:08:53,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-12 23:08:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 23:08:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:08:53,513 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 23:08:53,513 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 23:08:53,514 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-12 23:08:53,514 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-12 23:08:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:08:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:08:53,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:08:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-12 23:08:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2021-11-12 23:08:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2021-11-12 23:08:53,516 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-12 23:08:53,516 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-12 23:08:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:08:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:08:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:08:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-11-12 23:08:53,517 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-11-12 23:08:53,517 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:08:53,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:08:53,518 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-11-12 23:08:53,518 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-11-12 23:08:53,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:08:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-12 23:08:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:08:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-12 23:08:53,519 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-12 23:08:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:08:53,519 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 23:08:53,519 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 23:08:53,520 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-12 23:08:53,520 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-12 23:08:54,415 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2021-11-12 23:09:08,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:09:08,162 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-12 23:09:08,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:08 BoogieIcfgContainer [2021-11-12 23:09:08,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:09:08,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:09:08,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:09:08,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:09:08,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:08:48" (1/3) ... [2021-11-12 23:09:08,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dceda1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:09:08, skipping insertion in model container [2021-11-12 23:09:08,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:08:53" (2/3) ... [2021-11-12 23:09:08,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dceda1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:09:08, skipping insertion in model container [2021-11-12 23:09:08,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:08" (3/3) ... [2021-11-12 23:09:08,179 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2021-11-12 23:09:08,186 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:09:08,186 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:09:08,256 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:09:08,263 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 [2021-11-12 23:09:08,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:09:08,289 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 109 states have internal predecessors, (138), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-12 23:09:08,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-12 23:09:08,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:08,312 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:08,312 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:08,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash -879845289, now seen corresponding path program 1 times [2021-11-12 23:09:08,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:08,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246711038] [2021-11-12 23:09:08,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:08,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:08,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:08,348 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:08,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:09:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:12,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:09:12,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-12 23:09:13,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-11-12 23:09:13,792 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:13,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246711038] [2021-11-12 23:09:13,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246711038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:13,793 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:13,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:09:13,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427658327] [2021-11-12 23:09:13,796 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:13,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:09:13,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:13,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:09:13,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:09:13,834 INFO L87 Difference]: Start difference. First operand has 167 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 109 states have internal predecessors, (138), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:09:13,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:13,893 INFO L93 Difference]: Finished difference Result 325 states and 445 transitions. [2021-11-12 23:09:13,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:09:13,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 144 [2021-11-12 23:09:13,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:13,916 INFO L225 Difference]: With dead ends: 325 [2021-11-12 23:09:13,916 INFO L226 Difference]: Without dead ends: 160 [2021-11-12 23:09:13,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:09:13,933 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.91ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:13,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 7.91ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:09:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-12 23:09:13,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-12 23:09:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 102 states have (on average 1.2352941176470589) internal successors, (126), 103 states have internal predecessors, (126), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-12 23:09:13,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 205 transitions. [2021-11-12 23:09:13,998 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 205 transitions. Word has length 144 [2021-11-12 23:09:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:14,000 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 205 transitions. [2021-11-12 23:09:14,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-12 23:09:14,001 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 205 transitions. [2021-11-12 23:09:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-12 23:09:14,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:14,007 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:14,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:09:14,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:14,220 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:14,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:14,221 INFO L85 PathProgramCache]: Analyzing trace with hash 524131341, now seen corresponding path program 1 times [2021-11-12 23:09:14,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:14,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511408885] [2021-11-12 23:09:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:14,232 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:14,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:14,233 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:14,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:09:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:19,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:09:19,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:19,787 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-12 23:09:19,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:20,443 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-12 23:09:20,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:20,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511408885] [2021-11-12 23:09:20,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511408885] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:09:20,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:09:20,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:09:20,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52722757] [2021-11-12 23:09:20,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:20,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:09:20,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:20,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:09:20,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:09:20,448 INFO L87 Difference]: Start difference. First operand 160 states and 205 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:09:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:20,565 INFO L93 Difference]: Finished difference Result 312 states and 401 transitions. [2021-11-12 23:09:20,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:09:20,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2021-11-12 23:09:20,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:20,570 INFO L225 Difference]: With dead ends: 312 [2021-11-12 23:09:20,570 INFO L226 Difference]: Without dead ends: 164 [2021-11-12 23:09:20,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:09:20,574 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 2 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.44ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:20,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 808 Invalid, 11 Unknown, 0 Unchecked, 8.41ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 51.44ms Time] [2021-11-12 23:09:20,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-12 23:09:20,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-12 23:09:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 106 states have internal predecessors, (129), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2021-11-12 23:09:20,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2021-11-12 23:09:20,606 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 150 [2021-11-12 23:09:20,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:20,607 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2021-11-12 23:09:20,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:09:20,607 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2021-11-12 23:09:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-12 23:09:20,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:20,612 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:20,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:20,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:20,820 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:20,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash -992467699, now seen corresponding path program 1 times [2021-11-12 23:09:20,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:20,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192800658] [2021-11-12 23:09:20,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:20,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:20,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:20,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:20,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:09:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:25,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:09:25,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-12 23:09:25,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:26,499 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-12 23:09:26,499 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:26,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192800658] [2021-11-12 23:09:26,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192800658] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:09:26,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:09:26,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 23:09:26,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637102582] [2021-11-12 23:09:26,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:26,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:09:26,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:26,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:09:26,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:09:26,502 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-12 23:09:26,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:26,814 INFO L93 Difference]: Finished difference Result 318 states and 405 transitions. [2021-11-12 23:09:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:09:26,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 162 [2021-11-12 23:09:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:26,821 INFO L225 Difference]: With dead ends: 318 [2021-11-12 23:09:26,821 INFO L226 Difference]: Without dead ends: 166 [2021-11-12 23:09:26,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:09:26,833 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 218.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.85ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 249.51ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:26,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 78 Unknown, 0 Unchecked, 8.85ms Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 249.51ms Time] [2021-11-12 23:09:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-12 23:09:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-12 23:09:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 108 states have internal predecessors, (130), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2021-11-12 23:09:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2021-11-12 23:09:26,857 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 162 [2021-11-12 23:09:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:26,858 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2021-11-12 23:09:26,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-12 23:09:26,858 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2021-11-12 23:09:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-12 23:09:26,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:26,863 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 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] [2021-11-12 23:09:26,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:27,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:27,072 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:27,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:27,073 INFO L85 PathProgramCache]: Analyzing trace with hash 841342826, now seen corresponding path program 1 times [2021-11-12 23:09:27,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:27,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593615187] [2021-11-12 23:09:27,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:27,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:27,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:27,082 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:27,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:09:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:31,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:09:31,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:32,053 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 [2021-11-12 23:09:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-12 23:09:33,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:34,412 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 30 treesize of output 26 [2021-11-12 23:09:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-12 23:09:34,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:34,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593615187] [2021-11-12 23:09:34,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593615187] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:09:34,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:09:34,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-12 23:09:34,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380556010] [2021-11-12 23:09:34,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:34,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:09:34,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:34,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:09:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:09:34,850 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 23:09:35,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:35,309 INFO L93 Difference]: Finished difference Result 321 states and 407 transitions. [2021-11-12 23:09:35,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:09:35,312 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 167 [2021-11-12 23:09:35,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:35,315 INFO L225 Difference]: With dead ends: 321 [2021-11-12 23:09:35,316 INFO L226 Difference]: Without dead ends: 175 [2021-11-12 23:09:35,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-12 23:09:35,318 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 14 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.91ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 331.85ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:35,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1154 Invalid, 84 Unknown, 0 Unchecked, 7.91ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 68 Unchecked, 331.85ms Time] [2021-11-12 23:09:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-12 23:09:35,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-12 23:09:35,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 114 states have (on average 1.2280701754385965) internal successors, (140), 116 states have internal predecessors, (140), 40 states have call successors, (40), 18 states have call predecessors, (40), 20 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-12 23:09:35,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 222 transitions. [2021-11-12 23:09:35,351 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 222 transitions. Word has length 167 [2021-11-12 23:09:35,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:35,352 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 222 transitions. [2021-11-12 23:09:35,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-12 23:09:35,352 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 222 transitions. [2021-11-12 23:09:35,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-12 23:09:35,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:35,360 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:35,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:35,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:35,561 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:35,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:35,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1872383724, now seen corresponding path program 1 times [2021-11-12 23:09:35,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:35,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564160791] [2021-11-12 23:09:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:35,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:35,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:35,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:35,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:09:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:39,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1902 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:09:39,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-12 23:09:40,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:41,085 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-12 23:09:41,085 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:41,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564160791] [2021-11-12 23:09:41,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564160791] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:09:41,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:09:41,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-12 23:09:41,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655728124] [2021-11-12 23:09:41,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:41,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:09:41,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:41,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:09:41,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:09:41,088 INFO L87 Difference]: Start difference. First operand 175 states and 222 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 23:09:41,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:41,287 INFO L93 Difference]: Finished difference Result 325 states and 416 transitions. [2021-11-12 23:09:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:09:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 167 [2021-11-12 23:09:41,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:41,293 INFO L225 Difference]: With dead ends: 325 [2021-11-12 23:09:41,293 INFO L226 Difference]: Without dead ends: 177 [2021-11-12 23:09:41,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:09:41,295 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 21 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 178.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:41,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 766 Invalid, 38 Unknown, 0 Unchecked, 4.19ms Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 178.34ms Time] [2021-11-12 23:09:41,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-12 23:09:41,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-12 23:09:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 117 states have internal predecessors, (140), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2021-11-12 23:09:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 226 transitions. [2021-11-12 23:09:41,323 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 226 transitions. Word has length 167 [2021-11-12 23:09:41,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:41,323 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 226 transitions. [2021-11-12 23:09:41,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 23:09:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 226 transitions. [2021-11-12 23:09:41,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-12 23:09:41,333 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:41,333 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:41,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:41,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:41,534 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:41,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:41,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2030398656, now seen corresponding path program 1 times [2021-11-12 23:09:41,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:41,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386378879] [2021-11-12 23:09:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:41,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:41,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:41,538 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:41,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:09:45,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:45,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 23:09:45,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:46,180 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 [2021-11-12 23:09:47,413 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-12 23:09:47,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:48,612 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 30 treesize of output 26 [2021-11-12 23:09:49,022 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-12 23:09:49,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:49,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386378879] [2021-11-12 23:09:49,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386378879] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:09:49,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:09:49,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-12 23:09:49,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162878670] [2021-11-12 23:09:49,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:49,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 23:09:49,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:49,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 23:09:49,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-12 23:09:49,025 INFO L87 Difference]: Start difference. First operand 177 states and 226 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-12 23:09:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:49,626 INFO L93 Difference]: Finished difference Result 336 states and 429 transitions. [2021-11-12 23:09:49,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-12 23:09:49,629 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 173 [2021-11-12 23:09:49,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:49,631 INFO L225 Difference]: With dead ends: 336 [2021-11-12 23:09:49,632 INFO L226 Difference]: Without dead ends: 180 [2021-11-12 23:09:49,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-12 23:09:49,633 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 23 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 434.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.56ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 473.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:49,634 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 949 Invalid, 72 Unknown, 0 Unchecked, 4.56ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 42 Unchecked, 473.87ms Time] [2021-11-12 23:09:49,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-12 23:09:49,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-12 23:09:49,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 119 states have internal predecessors, (142), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-12 23:09:49,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 230 transitions. [2021-11-12 23:09:49,651 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 230 transitions. Word has length 173 [2021-11-12 23:09:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:49,652 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 230 transitions. [2021-11-12 23:09:49,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-12 23:09:49,652 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 230 transitions. [2021-11-12 23:09:49,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-12 23:09:49,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:49,655 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:49,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:49,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:49,880 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:49,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2133509734, now seen corresponding path program 1 times [2021-11-12 23:09:49,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:49,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675624543] [2021-11-12 23:09:49,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:49,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:49,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:49,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:49,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:09:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:54,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:09:54,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:54,665 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-12 23:09:54,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:55,342 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-12 23:09:55,342 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:55,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675624543] [2021-11-12 23:09:55,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675624543] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:09:55,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:09:55,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 23:09:55,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801554731] [2021-11-12 23:09:55,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:55,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:09:55,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:55,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:09:55,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:09:55,344 INFO L87 Difference]: Start difference. First operand 180 states and 230 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 23:09:55,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:55,678 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-12 23:09:55,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:09:55,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 178 [2021-11-12 23:09:55,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:55,682 INFO L225 Difference]: With dead ends: 288 [2021-11-12 23:09:55,682 INFO L226 Difference]: Without dead ends: 178 [2021-11-12 23:09:55,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:09:55,684 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 258.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.64ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 281.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:55,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 78 Unknown, 0 Unchecked, 4.64ms Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 281.23ms Time] [2021-11-12 23:09:55,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-12 23:09:55,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2021-11-12 23:09:55,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 114 states have internal predecessors, (136), 42 states have call successors, (42), 19 states have call predecessors, (42), 18 states have return successors, (44), 40 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-12 23:09:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 222 transitions. [2021-11-12 23:09:55,716 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 222 transitions. Word has length 178 [2021-11-12 23:09:55,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:55,716 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 222 transitions. [2021-11-12 23:09:55,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 23:09:55,717 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 222 transitions. [2021-11-12 23:09:55,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-12 23:09:55,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:55,721 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:55,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:55,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:55,944 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:55,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash 342535469, now seen corresponding path program 1 times [2021-11-12 23:09:55,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:55,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836710754] [2021-11-12 23:09:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:55,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:55,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:55,949 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:55,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:10:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:00,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 1983 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-12 23:10:00,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-12 23:10:00,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-12 23:10:01,469 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:01,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836710754] [2021-11-12 23:10:01,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836710754] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:10:01,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:10:01,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-12 23:10:01,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566782866] [2021-11-12 23:10:01,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:01,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:10:01,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:01,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:10:01,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:10:01,472 INFO L87 Difference]: Start difference. First operand 174 states and 222 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-12 23:10:01,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:01,787 INFO L93 Difference]: Finished difference Result 277 states and 361 transitions. [2021-11-12 23:10:01,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-12 23:10:01,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 183 [2021-11-12 23:10:01,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:01,790 INFO L225 Difference]: With dead ends: 277 [2021-11-12 23:10:01,790 INFO L226 Difference]: Without dead ends: 180 [2021-11-12 23:10:01,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-12 23:10:01,791 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 2 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 216.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 277.50ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:01,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1126 Invalid, 96 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 277.50ms Time] [2021-11-12 23:10:01,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-12 23:10:01,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-12 23:10:01,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 120 states have internal predecessors, (140), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (49), 40 states have call predecessors, (49), 41 states have call successors, (49) [2021-11-12 23:10:01,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 231 transitions. [2021-11-12 23:10:01,812 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 231 transitions. Word has length 183 [2021-11-12 23:10:01,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:01,813 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 231 transitions. [2021-11-12 23:10:01,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-12 23:10:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 231 transitions. [2021-11-12 23:10:01,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-12 23:10:01,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:01,817 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:01,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:02,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:02,019 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:02,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:02,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2066741123, now seen corresponding path program 1 times [2021-11-12 23:10:02,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:02,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540676523] [2021-11-12 23:10:02,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:02,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:02,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:02,024 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:02,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:10:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:06,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:10:06,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-12 23:10:07,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-12 23:10:09,199 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:09,199 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540676523] [2021-11-12 23:10:09,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540676523] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:10:09,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:10:09,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-12 23:10:09,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496212789] [2021-11-12 23:10:09,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:09,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:10:09,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:10:09,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 23:10:09,202 INFO L87 Difference]: Start difference. First operand 180 states and 231 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 23:10:11,416 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:13,425 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:10:17,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:17,111 INFO L93 Difference]: Finished difference Result 287 states and 381 transitions. [2021-11-12 23:10:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:10:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 189 [2021-11-12 23:10:17,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:17,117 INFO L225 Difference]: With dead ends: 287 [2021-11-12 23:10:17,117 INFO L226 Difference]: Without dead ends: 182 [2021-11-12 23:10:17,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:10:17,119 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 7 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7287.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 7502.65ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:17,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 899 Invalid, 124 Unknown, 0 Unchecked, 3.68ms Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 2 Unknown, 64 Unchecked, 7502.65ms Time] [2021-11-12 23:10:17,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-12 23:10:17,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2021-11-12 23:10:17,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 119 states have internal predecessors, (140), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-12 23:10:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 229 transitions. [2021-11-12 23:10:17,131 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 229 transitions. Word has length 189 [2021-11-12 23:10:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:17,131 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 229 transitions. [2021-11-12 23:10:17,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 23:10:17,132 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 229 transitions. [2021-11-12 23:10:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-12 23:10:17,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:17,134 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:10:17,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:17,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:17,352 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:17,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:17,353 INFO L85 PathProgramCache]: Analyzing trace with hash 752486313, now seen corresponding path program 2 times [2021-11-12 23:10:17,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:17,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864635362] [2021-11-12 23:10:17,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:10:17,359 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:17,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:17,360 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:17,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99b5611-e289-46f6-81c0-a19d73aff6a7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process