./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs --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 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:21:23,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:21:23,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:21:23,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:21:23,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:21:23,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:21:23,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:21:23,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:21:23,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:21:23,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:21:23,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:21:23,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:21:23,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:21:23,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:21:24,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:21:24,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:21:24,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:21:24,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:21:24,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:21:24,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:21:24,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:21:24,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:21:24,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:21:24,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:21:24,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:21:24,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:21:24,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:21:24,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:21:24,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:21:24,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:21:24,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:21:24,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:21:24,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:21:24,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:21:24,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:21:24,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:21:24,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:21:24,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:21:24,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:21:24,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:21:24,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:21:24,056 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:21:24,099 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:21:24,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:21:24,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:21:24,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:21:24,100 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:21:24,100 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:21:24,101 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:21:24,101 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:21:24,101 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:21:24,101 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:21:24,101 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:21:24,102 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:21:24,102 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:21:24,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:21:24,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:21:24,102 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:21:24,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:21:24,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:21:24,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:21:24,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:21:24,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:21:24,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:21:24,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:21:24,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:21:24,104 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:21:24,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:21:24,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:21:24,110 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:21:24,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:24,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:21:24,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:21:24,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:21:24,113 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:21:24,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:21:24,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:21:24,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:21:24,115 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:21:24,115 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_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 [2021-11-19 14:21:24,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:21:24,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:21:24,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:21:24,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:21:24,401 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:21:24,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2021-11-19 14:21:24,474 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data/f60b86712/001b12e548524f0c8525a240eb08e0f0/FLAG5eb03c00f [2021-11-19 14:21:25,476 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:21:25,477 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2021-11-19 14:21:25,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data/f60b86712/001b12e548524f0c8525a240eb08e0f0/FLAG5eb03c00f [2021-11-19 14:21:25,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data/f60b86712/001b12e548524f0c8525a240eb08e0f0 [2021-11-19 14:21:25,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:21:25,866 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:21:25,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:25,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:21:25,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:21:25,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:25" (1/1) ... [2021-11-19 14:21:25,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@370120e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:25, skipping insertion in model container [2021-11-19 14:21:25,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:25" (1/1) ... [2021-11-19 14:21:25,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:21:26,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:26,400 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2021-11-19 14:21:26,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2021-11-19 14:21:26,445 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:21:26,454 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:21:27,523 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,524 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,524 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,525 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,526 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,541 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,542 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,545 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,547 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,548 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,549 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:27,550 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,030 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:21:28,031 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:21:28,032 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:21:28,034 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:21:28,035 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:21:28,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:21:28,037 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:21:28,037 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:21:28,038 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:21:28,039 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:21:28,353 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:21:28,758 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,759 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,794 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,798 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,806 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,806 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,831 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,837 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,837 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,838 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,838 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:28,889 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:28,942 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) [2021-11-19 14:21:28,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5614b58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:28, skipping insertion in model container [2021-11-19 14:21:28,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:28,943 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:21:28,945 INFO L158 Benchmark]: Toolchain (without parser) took 3077.28ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 70.8MB in the beginning and 79.8MB in the end (delta: -9.0MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2021-11-19 14:21:28,946 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 119.5MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:21:28,947 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3068.57ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 70.6MB in the beginning and 79.8MB in the end (delta: -9.2MB). Peak memory consumption was 27.0MB. Max. memory is 16.1GB. [2021-11-19 14:21:28,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 119.5MB. Free memory is still 97.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3068.57ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 70.6MB in the beginning and 79.8MB in the end (delta: -9.2MB). Peak memory consumption was 27.0MB. 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_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs --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 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:21:31,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:21:31,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:21:31,245 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:21:31,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:21:31,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:21:31,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:21:31,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:21:31,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:21:31,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:21:31,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:21:31,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:21:31,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:21:31,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:21:31,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:21:31,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:21:31,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:21:31,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:21:31,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:21:31,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:21:31,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:21:31,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:21:31,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:21:31,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:21:31,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:21:31,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:21:31,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:21:31,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:21:31,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:21:31,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:21:31,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:21:31,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:21:31,324 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:21:31,325 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:21:31,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:21:31,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:21:31,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:21:31,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:21:31,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:21:31,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:21:31,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:21:31,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:21:31,378 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:21:31,379 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:21:31,380 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:21:31,380 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:21:31,381 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:21:31,381 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:21:31,381 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:21:31,381 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:21:31,381 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:21:31,382 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:21:31,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:21:31,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:21:31,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:21:31,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:21:31,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:21:31,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:21:31,385 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:21:31,385 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:21:31,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:21:31,386 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:21:31,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:21:31,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:21:31,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:21:31,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:21:31,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:31,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:21:31,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:21:31,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:21:31,387 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:21:31,388 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:21:31,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:21:31,388 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:21:31,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:21:31,388 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_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e3410638a547f2efce35a13c7d23c64ee660b1c493ec273ce9d4043edc218c3 [2021-11-19 14:21:31,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:21:31,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:21:31,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:21:31,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:21:31,765 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:21:31,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2021-11-19 14:21:31,837 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data/36cce916f/c3ec99f5e25a4489883a9a9c923fd00a/FLAG3161214f2 [2021-11-19 14:21:32,879 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:21:32,880 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2021-11-19 14:21:32,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data/36cce916f/c3ec99f5e25a4489883a9a9c923fd00a/FLAG3161214f2 [2021-11-19 14:21:33,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/data/36cce916f/c3ec99f5e25a4489883a9a9c923fd00a [2021-11-19 14:21:33,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:21:33,217 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:21:33,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:33,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:21:33,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:21:33,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:33" (1/1) ... [2021-11-19 14:21:33,223 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7125714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:33, skipping insertion in model container [2021-11-19 14:21:33,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:21:33" (1/1) ... [2021-11-19 14:21:33,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:21:33,405 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:33,806 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2021-11-19 14:21:33,813 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2021-11-19 14:21:33,842 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:21:33,848 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:21:35,121 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,122 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,123 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,124 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,125 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,152 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,153 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,155 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,156 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,158 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,159 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,160 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,160 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:35,685 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:21:35,687 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:21:35,688 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:21:35,689 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:21:35,691 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:21:35,692 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:21:35,693 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:21:35,693 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:21:35,694 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:21:35,695 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:21:35,902 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:21:36,282 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,283 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,315 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,316 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,326 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,327 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,382 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,384 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,384 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,384 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,385 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,441 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:36,493 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:21:36,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:21:36,537 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2021-11-19 14:21:36,537 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2021-11-19 14:21:36,539 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:21:36,539 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:21:36,612 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,612 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,613 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,614 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,624 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,624 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,625 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,626 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,627 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,627 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,628 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,628 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:21:36,666 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:21:36,668 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:21:36,669 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:21:36,670 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:21:36,671 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:21:36,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:21:36,672 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:21:36,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:21:36,673 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:21:36,708 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:21:36,857 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,858 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,871 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,871 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,874 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,875 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,888 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,889 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,890 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,890 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,890 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,891 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,891 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:36,918 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:36,957 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:21:36,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2021-11-19 14:21:36,983 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2021-11-19 14:21:36,985 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:21:36,985 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:21:37,047 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,048 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,048 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,049 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,050 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,058 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,058 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,059 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,060 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,061 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,063 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,063 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,063 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,099 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:21:37,101 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:21:37,102 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:21:37,102 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:21:37,103 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:21:37,104 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:21:37,104 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:21:37,105 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:21:37,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:21:37,106 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:21:37,127 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:21:37,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,281 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,282 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,285 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,286 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,295 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,296 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,297 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,297 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,297 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,298 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,298 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:21:37,325 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:21:37,681 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:21:37,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37 WrapperNode [2021-11-19 14:21:37,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:21:37,683 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:21:37,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:21:37,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:21:37,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:37,886 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,037 INFO L137 Inliner]: procedures = 797, calls = 2491, calls flagged for inlining = 72, calls inlined = 24, statements flattened = 1368 [2021-11-19 14:21:38,037 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:21:38,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:21:38,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:21:38,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:21:38,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:21:38,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:21:38,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:21:38,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:21:38,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (1/1) ... [2021-11-19 14:21:38,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:21:38,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:21:38,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:21:38,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:21:38,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 14:21:38,371 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:21:38,377 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:21:38,407 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:21:38,407 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:21:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 14:21:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2021-11-19 14:21:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:21:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:21:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:21:38,408 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 14:21:38,408 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-19 14:21:38,409 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 14:21:38,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 14:21:38,409 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 14:21:38,409 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-19 14:21:38,409 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 14:21:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2021-11-19 14:21:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-19 14:21:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-19 14:21:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:21:38,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:21:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-19 14:21:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-19 14:21:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2021-11-19 14:21:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2021-11-19 14:21:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 14:21:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 14:21:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:21:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 14:21:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-19 14:21:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-19 14:21:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-19 14:21:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-19 14:21:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:21:38,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 14:21:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-19 14:21:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-19 14:21:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-19 14:21:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:21:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:21:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:21:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 14:21:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 14:21:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 14:21:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:21:38,412 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:21:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:21:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 14:21:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 14:21:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 14:21:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 14:21:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-19 14:21:38,413 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2021-11-19 14:21:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2021-11-19 14:21:38,946 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:21:38,949 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:21:42,066 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-19 14:21:45,119 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-19 14:21:47,833 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2021-11-19 14:21:47,834 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2021-11-19 14:21:58,282 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:21:58,294 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:21:58,295 INFO L301 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-19 14:21:58,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:58 BoogieIcfgContainer [2021-11-19 14:21:58,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:21:58,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:21:58,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:21:58,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:21:58,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:21:33" (1/3) ... [2021-11-19 14:21:58,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b713a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:58, skipping insertion in model container [2021-11-19 14:21:58,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:21:37" (2/3) ... [2021-11-19 14:21:58,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b713a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:21:58, skipping insertion in model container [2021-11-19 14:21:58,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:21:58" (3/3) ... [2021-11-19 14:21:58,306 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_put_harness.i [2021-11-19 14:21:58,311 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:21:58,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:21:58,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:21:58,369 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 [2021-11-19 14:21:58,369 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:21:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 232 states have (on average 1.2974137931034482) internal successors, (301), 229 states have internal predecessors, (301), 83 states have call successors, (83), 28 states have call predecessors, (83), 28 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2021-11-19 14:21:58,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-19 14:21:58,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:21:58,410 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-19 14:21:58,411 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:21:58,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:21:58,416 INFO L85 PathProgramCache]: Analyzing trace with hash -202297987, now seen corresponding path program 1 times [2021-11-19 14:21:58,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:21:58,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352418309] [2021-11-19 14:21:58,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:21:58,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:21:58,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:21:58,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:21:58,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:21:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:21:59,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:21:59,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-11-19 14:22:00,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:00,683 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-11-19 14:22:00,684 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:00,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352418309] [2021-11-19 14:22:00,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352418309] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:22:00,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:22:00,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:22:00,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376277340] [2021-11-19 14:22:00,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:00,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:22:00,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:00,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:22:00,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:22:00,721 INFO L87 Difference]: Start difference. First operand has 341 states, 232 states have (on average 1.2974137931034482) internal successors, (301), 229 states have internal predecessors, (301), 83 states have call successors, (83), 28 states have call predecessors, (83), 28 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:22:00,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:00,790 INFO L93 Difference]: Finished difference Result 676 states and 968 transitions. [2021-11-19 14:22:00,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:22:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 134 [2021-11-19 14:22:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:00,806 INFO L225 Difference]: With dead ends: 676 [2021-11-19 14:22:00,806 INFO L226 Difference]: Without dead ends: 335 [2021-11-19 14:22:00,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:22:00,816 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:00,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:22:00,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-19 14:22:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2021-11-19 14:22:00,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 223 states have (on average 1.2825112107623318) internal successors, (286), 224 states have internal predecessors, (286), 83 states have call successors, (83), 28 states have call predecessors, (83), 28 states have return successors, (82), 82 states have call predecessors, (82), 82 states have call successors, (82) [2021-11-19 14:22:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 451 transitions. [2021-11-19 14:22:00,912 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 451 transitions. Word has length 134 [2021-11-19 14:22:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:00,913 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 451 transitions. [2021-11-19 14:22:00,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 14:22:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 451 transitions. [2021-11-19 14:22:00,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-19 14:22:00,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:00,924 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-19 14:22:00,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:01,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:01,145 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:01,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:01,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1645413315, now seen corresponding path program 1 times [2021-11-19 14:22:01,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:01,150 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566784250] [2021-11-19 14:22:01,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:01,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:01,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:01,151 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:01,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:22:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:02,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1420 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:22:02,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:02,809 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-19 14:22:02,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:03,488 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-19 14:22:03,488 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:03,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566784250] [2021-11-19 14:22:03,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566784250] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:03,488 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:03,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:22:03,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105722298] [2021-11-19 14:22:03,489 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:03,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:22:03,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:22:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:22:03,492 INFO L87 Difference]: Start difference. First operand 335 states and 451 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 14:22:03,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:03,650 INFO L93 Difference]: Finished difference Result 665 states and 899 transitions. [2021-11-19 14:22:03,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:22:03,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 134 [2021-11-19 14:22:03,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:03,658 INFO L225 Difference]: With dead ends: 665 [2021-11-19 14:22:03,658 INFO L226 Difference]: Without dead ends: 339 [2021-11-19 14:22:03,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:22:03,661 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 2 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:03,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1792 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:22:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-19 14:22:03,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2021-11-19 14:22:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 226 states have (on average 1.2787610619469028) internal successors, (289), 227 states have internal predecessors, (289), 83 states have call successors, (83), 28 states have call predecessors, (83), 29 states have return successors, (86), 83 states have call predecessors, (86), 82 states have call successors, (86) [2021-11-19 14:22:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 458 transitions. [2021-11-19 14:22:03,692 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 458 transitions. Word has length 134 [2021-11-19 14:22:03,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:03,693 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 458 transitions. [2021-11-19 14:22:03,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 14:22:03,693 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 458 transitions. [2021-11-19 14:22:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-19 14:22:03,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:03,696 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-19 14:22:03,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:03,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:03,918 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:03,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1960509953, now seen corresponding path program 1 times [2021-11-19 14:22:03,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:03,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049383473] [2021-11-19 14:22:03,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:03,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:03,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:03,922 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:03,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:22:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:04,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 1427 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:22:04,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:05,477 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-19 14:22:05,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-19 14:22:06,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:06,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049383473] [2021-11-19 14:22:06,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049383473] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:22:06,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:22:06,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:22:06,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274483220] [2021-11-19 14:22:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:06,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:22:06,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:22:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:22:06,247 INFO L87 Difference]: Start difference. First operand 339 states and 458 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:22:06,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:22:06,888 INFO L93 Difference]: Finished difference Result 671 states and 905 transitions. [2021-11-19 14:22:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:22:06,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2021-11-19 14:22:06,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:22:06,892 INFO L225 Difference]: With dead ends: 671 [2021-11-19 14:22:06,892 INFO L226 Difference]: Without dead ends: 341 [2021-11-19 14:22:06,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:22:06,894 INFO L933 BasicCegarLoop]: 430 mSDtfsCounter, 2 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:22:06,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2101 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:22:06,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-19 14:22:06,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-11-19 14:22:06,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 227 states have (on average 1.277533039647577) internal successors, (290), 229 states have internal predecessors, (290), 83 states have call successors, (83), 28 states have call predecessors, (83), 30 states have return successors, (87), 83 states have call predecessors, (87), 82 states have call successors, (87) [2021-11-19 14:22:06,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 460 transitions. [2021-11-19 14:22:06,926 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 460 transitions. Word has length 140 [2021-11-19 14:22:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:22:06,927 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 460 transitions. [2021-11-19 14:22:06,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 14:22:06,927 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 460 transitions. [2021-11-19 14:22:06,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 14:22:06,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:22:06,929 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:22:06,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:22:07,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:22:07,154 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:22:07,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:22:07,154 INFO L85 PathProgramCache]: Analyzing trace with hash -16928128, now seen corresponding path program 1 times [2021-11-19 14:22:07,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:22:07,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263581549] [2021-11-19 14:22:07,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:22:07,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:22:07,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:22:07,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:22:07,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:22:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:22:08,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:22:08,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:22:08,758 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 [2021-11-19 14:22:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-19 14:22:09,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:22:11,139 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 [2021-11-19 14:22:11,561 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-19 14:22:11,561 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:22:11,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263581549] [2021-11-19 14:22:11,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263581549] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:22:11,562 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:22:11,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 15 [2021-11-19 14:22:11,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630113277] [2021-11-19 14:22:11,562 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:22:11,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 14:22:11,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:22:11,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 14:22:11,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:22:11,564 INFO L87 Difference]: Start difference. First operand 341 states and 460 transitions. Second operand has 15 states, 15 states have (on average 5.8) internal successors, (87), 13 states have internal predecessors, (87), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-19 14:22:13,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:15,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:17,686 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:19,695 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:23,559 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:25,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:27,583 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:29,605 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:31,629 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:33,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:36,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:38,899 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:40,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:42,941 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:45,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:47,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:48,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:49,669 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:52,920 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:54,927 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:56,935 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:22:58,939 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:01,624 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:03,632 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:05,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:07,653 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:10,021 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:12,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:14,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:16,062 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:16,065 INFO L93 Difference]: Finished difference Result 682 states and 916 transitions. [2021-11-19 14:23:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 14:23:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 13 states have internal predecessors, (87), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 145 [2021-11-19 14:23:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:16,108 INFO L225 Difference]: With dead ends: 682 [2021-11-19 14:23:16,109 INFO L226 Difference]: Without dead ends: 358 [2021-11-19 14:23:16,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:23:16,115 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 31 mSDsluCounter, 3643 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 4091 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 64.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:16,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 4091 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 28 Unknown, 138 Unchecked, 64.3s Time] [2021-11-19 14:23:16,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-19 14:23:16,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 353. [2021-11-19 14:23:16,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 237 states have (on average 1.2742616033755274) internal successors, (302), 240 states have internal predecessors, (302), 83 states have call successors, (83), 29 states have call predecessors, (83), 32 states have return successors, (89), 83 states have call predecessors, (89), 82 states have call successors, (89) [2021-11-19 14:23:16,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 474 transitions. [2021-11-19 14:23:16,143 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 474 transitions. Word has length 145 [2021-11-19 14:23:16,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:16,143 INFO L470 AbstractCegarLoop]: Abstraction has 353 states and 474 transitions. [2021-11-19 14:23:16,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 13 states have internal predecessors, (87), 4 states have call successors, (36), 3 states have call predecessors, (36), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-19 14:23:16,144 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 474 transitions. [2021-11-19 14:23:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 14:23:16,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:16,146 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:16,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 14:23:16,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:16,369 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:16,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash 10137474, now seen corresponding path program 1 times [2021-11-19 14:23:16,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:16,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680922387] [2021-11-19 14:23:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:16,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:16,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:16,372 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:16,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:23:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:17,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:23:17,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:18,103 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-19 14:23:18,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:18,972 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-19 14:23:18,972 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:18,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680922387] [2021-11-19 14:23:18,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680922387] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:18,972 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:18,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:23:18,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125639386] [2021-11-19 14:23:18,973 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:18,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:23:18,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:18,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:23:18,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:23:18,974 INFO L87 Difference]: Start difference. First operand 353 states and 474 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 14:23:21,228 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:21,385 INFO L93 Difference]: Finished difference Result 687 states and 922 transitions. [2021-11-19 14:23:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:23:21,386 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 145 [2021-11-19 14:23:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:21,390 INFO L225 Difference]: With dead ends: 687 [2021-11-19 14:23:21,390 INFO L226 Difference]: Without dead ends: 358 [2021-11-19 14:23:21,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:23:21,393 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 20 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:21,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 1744 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-19 14:23:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-19 14:23:21,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 352. [2021-11-19 14:23:21,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 236 states have (on average 1.271186440677966) internal successors, (300), 238 states have internal predecessors, (300), 84 states have call successors, (84), 29 states have call predecessors, (84), 31 states have return successors, (89), 84 states have call predecessors, (89), 83 states have call successors, (89) [2021-11-19 14:23:21,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 473 transitions. [2021-11-19 14:23:21,432 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 473 transitions. Word has length 145 [2021-11-19 14:23:21,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:21,432 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 473 transitions. [2021-11-19 14:23:21,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-19 14:23:21,433 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 473 transitions. [2021-11-19 14:23:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-19 14:23:21,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:21,435 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:21,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:21,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:21,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:21,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:21,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1905137460, now seen corresponding path program 1 times [2021-11-19 14:23:21,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:21,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627225768] [2021-11-19 14:23:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:21,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:21,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:21,653 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:21,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:23:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:22,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 14:23:22,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:23,132 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 [2021-11-19 14:23:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-19 14:23:24,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:26,308 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 [2021-11-19 14:23:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-19 14:23:26,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:26,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627225768] [2021-11-19 14:23:26,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627225768] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:23:26,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:23:26,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-19 14:23:26,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662350585] [2021-11-19 14:23:26,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:26,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:23:26,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:26,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:23:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:23:26,747 INFO L87 Difference]: Start difference. First operand 352 states and 473 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-19 14:23:29,487 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:23:29,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:29,658 INFO L93 Difference]: Finished difference Result 689 states and 925 transitions. [2021-11-19 14:23:29,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:23:29,662 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 151 [2021-11-19 14:23:29,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:29,666 INFO L225 Difference]: With dead ends: 689 [2021-11-19 14:23:29,666 INFO L226 Difference]: Without dead ends: 355 [2021-11-19 14:23:29,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:23:29,669 INFO L933 BasicCegarLoop]: 441 mSDtfsCounter, 22 mSDsluCounter, 1661 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2102 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 134 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:29,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 2102 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 1 Unknown, 134 Unchecked, 2.7s Time] [2021-11-19 14:23:29,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2021-11-19 14:23:29,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 355. [2021-11-19 14:23:29,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 238 states have (on average 1.26890756302521) internal successors, (302), 240 states have internal predecessors, (302), 85 states have call successors, (85), 30 states have call predecessors, (85), 31 states have return successors, (90), 84 states have call predecessors, (90), 84 states have call successors, (90) [2021-11-19 14:23:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 477 transitions. [2021-11-19 14:23:29,691 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 477 transitions. Word has length 151 [2021-11-19 14:23:29,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:29,692 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 477 transitions. [2021-11-19 14:23:29,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (26), 3 states have call predecessors, (26), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-19 14:23:29,692 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 477 transitions. [2021-11-19 14:23:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 14:23:29,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:29,695 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:29,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-19 14:23:29,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:29,909 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash -2024247013, now seen corresponding path program 1 times [2021-11-19 14:23:29,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:29,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843404731] [2021-11-19 14:23:29,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:29,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:29,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:29,914 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:29,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:23:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:31,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:23:31,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-19 14:23:31,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2021-11-19 14:23:32,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:32,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843404731] [2021-11-19 14:23:32,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843404731] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:32,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:32,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 14:23:32,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615662377] [2021-11-19 14:23:32,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:32,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:23:32,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:32,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:23:32,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:23:32,093 INFO L87 Difference]: Start difference. First operand 355 states and 477 transitions. Second operand has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 14:23:32,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:32,907 INFO L93 Difference]: Finished difference Result 655 states and 885 transitions. [2021-11-19 14:23:32,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:23:32,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 156 [2021-11-19 14:23:32,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:32,913 INFO L225 Difference]: With dead ends: 655 [2021-11-19 14:23:32,913 INFO L226 Difference]: Without dead ends: 357 [2021-11-19 14:23:32,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:23:32,916 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 2 mSDsluCounter, 1680 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:32,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2112 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:23:32,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-19 14:23:32,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2021-11-19 14:23:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 239 states have (on average 1.2677824267782427) internal successors, (303), 242 states have internal predecessors, (303), 85 states have call successors, (85), 30 states have call predecessors, (85), 32 states have return successors, (97), 84 states have call predecessors, (97), 84 states have call successors, (97) [2021-11-19 14:23:32,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 485 transitions. [2021-11-19 14:23:32,938 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 485 transitions. Word has length 156 [2021-11-19 14:23:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:32,939 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 485 transitions. [2021-11-19 14:23:32,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 14:23:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 485 transitions. [2021-11-19 14:23:32,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-19 14:23:32,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:32,942 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:32,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:33,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:33,149 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash -129920552, now seen corresponding path program 1 times [2021-11-19 14:23:33,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:33,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923311851] [2021-11-19 14:23:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:33,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:33,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:33,154 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:33,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:23:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:34,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1522 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:23:34,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:34,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:35,160 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:35,161 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:35,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923311851] [2021-11-19 14:23:35,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923311851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:35,161 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:35,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 14:23:35,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185109936] [2021-11-19 14:23:35,162 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:35,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:23:35,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:35,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:23:35,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:23:35,163 INFO L87 Difference]: Start difference. First operand 357 states and 485 transitions. Second operand has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-19 14:23:35,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:35,373 INFO L93 Difference]: Finished difference Result 365 states and 492 transitions. [2021-11-19 14:23:35,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:23:35,374 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 161 [2021-11-19 14:23:35,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:35,377 INFO L225 Difference]: With dead ends: 365 [2021-11-19 14:23:35,378 INFO L226 Difference]: Without dead ends: 363 [2021-11-19 14:23:35,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:23:35,379 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 15 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:35,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2219 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:23:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-19 14:23:35,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 361. [2021-11-19 14:23:35,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 242 states have (on average 1.2644628099173554) internal successors, (306), 245 states have internal predecessors, (306), 85 states have call successors, (85), 31 states have call predecessors, (85), 33 states have return successors, (97), 84 states have call predecessors, (97), 84 states have call successors, (97) [2021-11-19 14:23:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 488 transitions. [2021-11-19 14:23:35,402 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 488 transitions. Word has length 161 [2021-11-19 14:23:35,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:35,403 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 488 transitions. [2021-11-19 14:23:35,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.166666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-19 14:23:35,403 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 488 transitions. [2021-11-19 14:23:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-19 14:23:35,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:35,406 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:35,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-19 14:23:35,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:35,614 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:35,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:35,614 INFO L85 PathProgramCache]: Analyzing trace with hash 855033707, now seen corresponding path program 1 times [2021-11-19 14:23:35,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:35,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102224638] [2021-11-19 14:23:35,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:35,619 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:35,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:35,620 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:35,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:23:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:36,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 1543 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:23:36,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:37,215 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:37,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:37,642 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:37,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102224638] [2021-11-19 14:23:37,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102224638] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:37,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:37,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:23:37,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062873026] [2021-11-19 14:23:37,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:37,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:23:37,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:23:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:23:37,644 INFO L87 Difference]: Start difference. First operand 361 states and 488 transitions. Second operand has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-19 14:23:37,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:37,887 INFO L93 Difference]: Finished difference Result 373 states and 500 transitions. [2021-11-19 14:23:37,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:23:37,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 174 [2021-11-19 14:23:37,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:37,891 INFO L225 Difference]: With dead ends: 373 [2021-11-19 14:23:37,891 INFO L226 Difference]: Without dead ends: 371 [2021-11-19 14:23:37,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:23:37,893 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 10 mSDsluCounter, 2223 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:37,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 2675 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:23:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-19 14:23:37,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 365. [2021-11-19 14:23:37,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 245 states have (on average 1.2612244897959184) internal successors, (309), 248 states have internal predecessors, (309), 85 states have call successors, (85), 32 states have call predecessors, (85), 34 states have return successors, (97), 84 states have call predecessors, (97), 84 states have call successors, (97) [2021-11-19 14:23:37,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 491 transitions. [2021-11-19 14:23:37,914 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 491 transitions. Word has length 174 [2021-11-19 14:23:37,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:37,915 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 491 transitions. [2021-11-19 14:23:37,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (30), 3 states have call predecessors, (30), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-19 14:23:37,915 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 491 transitions. [2021-11-19 14:23:37,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-19 14:23:37,918 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:37,919 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:37,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:38,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:38,133 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:38,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:38,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1607031790, now seen corresponding path program 1 times [2021-11-19 14:23:38,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:38,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982521566] [2021-11-19 14:23:38,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:38,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:38,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:38,137 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:23:39,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:39,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:23:39,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:39,873 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:39,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:40,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:40,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982521566] [2021-11-19 14:23:40,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982521566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:40,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:40,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 14:23:40,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048296193] [2021-11-19 14:23:40,430 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:40,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:23:40,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:40,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:23:40,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:23:40,432 INFO L87 Difference]: Start difference. First operand 365 states and 491 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-19 14:23:40,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:40,721 INFO L93 Difference]: Finished difference Result 510 states and 703 transitions. [2021-11-19 14:23:40,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:23:40,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) Word has length 180 [2021-11-19 14:23:40,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:40,726 INFO L225 Difference]: With dead ends: 510 [2021-11-19 14:23:40,726 INFO L226 Difference]: Without dead ends: 447 [2021-11-19 14:23:40,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:23:40,728 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 147 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:40,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1993 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:23:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-19 14:23:40,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 369. [2021-11-19 14:23:40,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 248 states have (on average 1.2580645161290323) internal successors, (312), 251 states have internal predecessors, (312), 85 states have call successors, (85), 32 states have call predecessors, (85), 35 states have return successors, (98), 85 states have call predecessors, (98), 84 states have call successors, (98) [2021-11-19 14:23:40,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 495 transitions. [2021-11-19 14:23:40,749 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 495 transitions. Word has length 180 [2021-11-19 14:23:40,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:40,750 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 495 transitions. [2021-11-19 14:23:40,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-19 14:23:40,750 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 495 transitions. [2021-11-19 14:23:40,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-19 14:23:40,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:40,753 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:40,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:40,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:40,977 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:40,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:40,978 INFO L85 PathProgramCache]: Analyzing trace with hash 99113150, now seen corresponding path program 1 times [2021-11-19 14:23:40,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:40,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519750294] [2021-11-19 14:23:40,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:40,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:40,980 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:40,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:23:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:42,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:23:42,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:42,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:43,084 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:23:43,084 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:43,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519750294] [2021-11-19 14:23:43,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519750294] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:43,085 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:43,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:23:43,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819349259] [2021-11-19 14:23:43,085 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:43,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:23:43,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:43,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:23:43,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:23:43,087 INFO L87 Difference]: Start difference. First operand 369 states and 495 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-19 14:23:43,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:43,148 INFO L93 Difference]: Finished difference Result 594 states and 795 transitions. [2021-11-19 14:23:43,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:23:43,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2021-11-19 14:23:43,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:43,151 INFO L225 Difference]: With dead ends: 594 [2021-11-19 14:23:43,152 INFO L226 Difference]: Without dead ends: 370 [2021-11-19 14:23:43,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 361 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:23:43,157 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 0 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:43,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 895 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:23:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-19 14:23:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-11-19 14:23:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 249 states have (on average 1.2570281124497993) internal successors, (313), 252 states have internal predecessors, (313), 85 states have call successors, (85), 32 states have call predecessors, (85), 35 states have return successors, (98), 85 states have call predecessors, (98), 84 states have call successors, (98) [2021-11-19 14:23:43,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 496 transitions. [2021-11-19 14:23:43,176 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 496 transitions. Word has length 182 [2021-11-19 14:23:43,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:43,176 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 496 transitions. [2021-11-19 14:23:43,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-11-19 14:23:43,177 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 496 transitions. [2021-11-19 14:23:43,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-19 14:23:43,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:43,180 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:43,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:43,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:43,405 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:43,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:43,406 INFO L85 PathProgramCache]: Analyzing trace with hash -554449091, now seen corresponding path program 1 times [2021-11-19 14:23:43,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:43,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289622977] [2021-11-19 14:23:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:43,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:43,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:43,409 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:43,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:23:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:44,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 14:23:44,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-19 14:23:46,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-11-19 14:23:48,915 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:48,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289622977] [2021-11-19 14:23:48,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289622977] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:23:48,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2144869326] [2021-11-19 14:23:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:48,916 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:23:48,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:23:48,918 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:23:48,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:23:49,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:49,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1660 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:23:49,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:50,544 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-19 14:23:50,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-11-19 14:23:51,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2144869326] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:51,237 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:23:51,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [13, 14] total 21 [2021-11-19 14:23:51,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240739614] [2021-11-19 14:23:51,238 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:51,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:23:51,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:51,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:23:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:23:51,240 INFO L87 Difference]: Start difference. First operand 370 states and 496 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:23:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:23:52,236 INFO L93 Difference]: Finished difference Result 648 states and 873 transitions. [2021-11-19 14:23:52,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:23:52,237 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 190 [2021-11-19 14:23:52,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:23:52,241 INFO L225 Difference]: With dead ends: 648 [2021-11-19 14:23:52,241 INFO L226 Difference]: Without dead ends: 370 [2021-11-19 14:23:52,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 757 GetRequests, 737 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:23:52,243 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 2 mSDsluCounter, 2090 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:23:52,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2522 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:23:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-19 14:23:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 370. [2021-11-19 14:23:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 249 states have (on average 1.2570281124497993) internal successors, (313), 252 states have internal predecessors, (313), 85 states have call successors, (85), 32 states have call predecessors, (85), 35 states have return successors, (97), 85 states have call predecessors, (97), 84 states have call successors, (97) [2021-11-19 14:23:52,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 495 transitions. [2021-11-19 14:23:52,262 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 495 transitions. Word has length 190 [2021-11-19 14:23:52,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:23:52,263 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 495 transitions. [2021-11-19 14:23:52,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-19 14:23:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 495 transitions. [2021-11-19 14:23:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 14:23:52,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:23:52,267 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:23:52,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:52,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:23:52,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:23:52,673 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:23:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:23:52,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1974656624, now seen corresponding path program 1 times [2021-11-19 14:23:52,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:23:52,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642883403] [2021-11-19 14:23:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:23:52,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:23:52,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:23:52,678 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:23:52,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:23:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:23:54,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 14:23:54,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:23:55,631 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-19 14:23:55,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:23:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-19 14:23:56,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:23:56,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642883403] [2021-11-19 14:23:56,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642883403] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:23:56,831 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:23:56,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 13 [2021-11-19 14:23:56,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148570329] [2021-11-19 14:23:56,832 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:23:56,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:23:56,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:23:56,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:23:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:23:56,834 INFO L87 Difference]: Start difference. First operand 370 states and 495 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 10 states have internal predecessors, (90), 7 states have call successors, (34), 5 states have call predecessors, (34), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-19 14:23:59,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:01,871 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:03,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:06,855 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:08,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:10,840 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:12,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:14,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:16,862 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:24:17,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:17,300 INFO L93 Difference]: Finished difference Result 752 states and 1028 transitions. [2021-11-19 14:24:17,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:24:17,301 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 10 states have internal predecessors, (90), 7 states have call successors, (34), 5 states have call predecessors, (34), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 195 [2021-11-19 14:24:17,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:17,305 INFO L225 Difference]: With dead ends: 752 [2021-11-19 14:24:17,305 INFO L226 Difference]: Without dead ends: 475 [2021-11-19 14:24:17,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:24:17,308 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 166 mSDsluCounter, 4433 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 17 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 4935 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:17,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 4935 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 152 Invalid, 7 Unknown, 0 Unchecked, 19.9s Time] [2021-11-19 14:24:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-11-19 14:24:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 417. [2021-11-19 14:24:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 283 states have (on average 1.2685512367491165) internal successors, (359), 288 states have internal predecessors, (359), 93 states have call successors, (93), 35 states have call predecessors, (93), 40 states have return successors, (108), 93 states have call predecessors, (108), 92 states have call successors, (108) [2021-11-19 14:24:17,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 560 transitions. [2021-11-19 14:24:17,331 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 560 transitions. Word has length 195 [2021-11-19 14:24:17,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:17,332 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 560 transitions. [2021-11-19 14:24:17,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 10 states have internal predecessors, (90), 7 states have call successors, (34), 5 states have call predecessors, (34), 2 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-19 14:24:17,332 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 560 transitions. [2021-11-19 14:24:17,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-19 14:24:17,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:17,334 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:17,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:17,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:17,557 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:17,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:17,558 INFO L85 PathProgramCache]: Analyzing trace with hash 2106086778, now seen corresponding path program 1 times [2021-11-19 14:24:17,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:17,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1114098062] [2021-11-19 14:24:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:17,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:17,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:17,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:17,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:24:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:19,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:24:19,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:19,512 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-19 14:24:19,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-11-19 14:24:20,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:20,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1114098062] [2021-11-19 14:24:20,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1114098062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:20,035 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:20,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 14:24:20,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595113203] [2021-11-19 14:24:20,035 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:20,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:24:20,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:20,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:24:20,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:24:20,037 INFO L87 Difference]: Start difference. First operand 417 states and 560 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-19 14:24:20,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:20,199 INFO L93 Difference]: Finished difference Result 482 states and 644 transitions. [2021-11-19 14:24:20,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:24:20,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) Word has length 189 [2021-11-19 14:24:20,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:20,204 INFO L225 Difference]: With dead ends: 482 [2021-11-19 14:24:20,204 INFO L226 Difference]: Without dead ends: 421 [2021-11-19 14:24:20,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:24:20,206 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 2 mSDsluCounter, 1342 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:20,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1791 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:24:20,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-19 14:24:20,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-19 14:24:20,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 286 states have (on average 1.2657342657342658) internal successors, (362), 291 states have internal predecessors, (362), 93 states have call successors, (93), 35 states have call predecessors, (93), 41 states have return successors, (110), 94 states have call predecessors, (110), 92 states have call successors, (110) [2021-11-19 14:24:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 565 transitions. [2021-11-19 14:24:20,230 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 565 transitions. Word has length 189 [2021-11-19 14:24:20,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:20,231 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 565 transitions. [2021-11-19 14:24:20,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-19 14:24:20,231 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 565 transitions. [2021-11-19 14:24:20,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-19 14:24:20,233 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:20,233 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:20,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:24:20,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:20,450 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:20,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1800689494, now seen corresponding path program 1 times [2021-11-19 14:24:20,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:20,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194577425] [2021-11-19 14:24:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:20,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:20,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:20,453 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:20,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:24:21,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:24:21,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 1619 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:24:21,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:24:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:24:22,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:24:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2021-11-19 14:24:23,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:24:23,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194577425] [2021-11-19 14:24:23,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194577425] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:24:23,061 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:24:23,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-19 14:24:23,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598201372] [2021-11-19 14:24:23,062 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:24:23,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 14:24:23,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:24:23,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 14:24:23,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:24:23,064 INFO L87 Difference]: Start difference. First operand 421 states and 565 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 10 states have internal predecessors, (101), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-19 14:24:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:24:23,709 INFO L93 Difference]: Finished difference Result 577 states and 791 transitions. [2021-11-19 14:24:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:24:23,710 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 10 states have internal predecessors, (101), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) Word has length 186 [2021-11-19 14:24:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:24:23,714 INFO L225 Difference]: With dead ends: 577 [2021-11-19 14:24:23,714 INFO L226 Difference]: Without dead ends: 514 [2021-11-19 14:24:23,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:24:23,716 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 151 mSDsluCounter, 3526 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:24:23,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 4037 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 14:24:23,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-19 14:24:23,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 429. [2021-11-19 14:24:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 294 states have (on average 1.2653061224489797) internal successors, (372), 299 states have internal predecessors, (372), 93 states have call successors, (93), 35 states have call predecessors, (93), 41 states have return successors, (110), 94 states have call predecessors, (110), 92 states have call successors, (110) [2021-11-19 14:24:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 575 transitions. [2021-11-19 14:24:23,740 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 575 transitions. Word has length 186 [2021-11-19 14:24:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:24:23,741 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 575 transitions. [2021-11-19 14:24:23,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 10 states have internal predecessors, (101), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 3 states have call predecessors, (28), 1 states have call successors, (28) [2021-11-19 14:24:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 575 transitions. [2021-11-19 14:24:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-19 14:24:23,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:24:23,744 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:24:23,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 14:24:23,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:24:23,962 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:24:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:24:23,963 INFO L85 PathProgramCache]: Analyzing trace with hash 46512322, now seen corresponding path program 1 times [2021-11-19 14:24:23,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:24:23,964 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232332518] [2021-11-19 14:24:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:24:23,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:24:23,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:24:23,965 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:24:23,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60041868-5cbf-4bd4-9f1a-b7bd2cddd622/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:24:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:25:00,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-19 14:25:00,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:25:02,608 INFO L354 Elim1Store]: treesize reduction 1099, result has 7.0 percent of original size [2021-11-19 14:25:02,608 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 7 case distinctions, treesize of input 70 treesize of output 95 [2021-11-19 14:25:07,438 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:25:07,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 66 [2021-11-19 14:25:09,272 INFO L354 Elim1Store]: treesize reduction 1099, result has 7.0 percent of original size [2021-11-19 14:25:09,272 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 7 case distinctions, treesize of input 70 treesize of output 95 [2021-11-19 14:25:14,764 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:25:14,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 437 treesize of output 373 [2021-11-19 14:25:16,888 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 106 proven. 10 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:25:16,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:25:28,107 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 22212 treesize of output 21414 [2021-11-19 14:25:28,117 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 21414 treesize of output 21400