./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.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_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/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_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/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_5e494e51-dd16-424c-bf4e-65a716b61d47/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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:51:22,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:51:22,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:51:22,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:51:22,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:51:22,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:51:22,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:51:22,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:51:22,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:51:22,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:51:22,413 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:51:22,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:51:22,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:51:22,418 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:51:22,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:51:22,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:51:22,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:51:22,430 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:51:22,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:51:22,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:51:22,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:51:22,450 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:51:22,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:51:22,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:51:22,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:51:22,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:51:22,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:51:22,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:51:22,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:51:22,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:51:22,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:51:22,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:51:22,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:51:22,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:51:22,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:51:22,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:51:22,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:51:22,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:51:22,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:51:22,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:51:22,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:51:22,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 14:51:22,497 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:51:22,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:51:22,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:51:22,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:51:22,498 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:51:22,499 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:51:22,499 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:51:22,499 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 14:51:22,499 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:51:22,500 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:51:22,500 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 14:51:22,500 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 14:51:22,500 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:51:22,501 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 14:51:22,501 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 14:51:22,501 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 14:51:22,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:51:22,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 14:51:22,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:51:22,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:51:22,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:51:22,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:51:22,503 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:51:22,504 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:51:22,504 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:51:22,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:51:22,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:51:22,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:51:22,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:51:22,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:51:22,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:51:22,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:51:22,506 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 14:51:22,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 14:51:22,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:51:22,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:51:22,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:51:22,507 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_5e494e51-dd16-424c-bf4e-65a716b61d47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2021-11-19 14:51:22,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:51:22,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:51:22,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:51:22,792 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:51:22,793 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:51:22,794 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2021-11-19 14:51:22,869 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data/e5d4a06b9/d9499216847c47f09de933a76b94e922/FLAG3d16b8a85 [2021-11-19 14:51:23,709 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:51:23,710 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2021-11-19 14:51:23,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data/e5d4a06b9/d9499216847c47f09de933a76b94e922/FLAG3d16b8a85 [2021-11-19 14:51:24,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data/e5d4a06b9/d9499216847c47f09de933a76b94e922 [2021-11-19 14:51:24,259 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:51:24,260 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:51:24,262 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:51:24,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:51:24,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:51:24,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:24" (1/1) ... [2021-11-19 14:51:24,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d185027 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:24, skipping insertion in model container [2021-11-19 14:51:24,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:24" (1/1) ... [2021-11-19 14:51:24,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:51:24,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:51:24,715 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_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2021-11-19 14:51:24,722 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_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2021-11-19 14:51:24,746 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:51:24,751 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:51:25,572 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:51:25,653 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:25,654 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:25,655 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:25,656 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:25,657 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:25,672 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:25,672 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:25,675 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:25,675 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:26,108 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:51:26,109 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:51:26,111 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:51:26,120 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:51:26,123 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:51:26,124 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:51:26,125 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:51:26,127 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:51:26,131 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:51:26,132 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:51:26,372 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:26,373 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:26,435 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:51:26,466 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 14:51:26,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3492c6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:26, skipping insertion in model container [2021-11-19 14:51:26,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:51:26,467 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 14:51:26,469 INFO L158 Benchmark]: Toolchain (without parser) took 2207.59ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 56.4MB in the beginning and 81.9MB in the end (delta: -25.4MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-11-19 14:51:26,470 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 98.6MB. Free memory was 68.5MB in the beginning and 68.4MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 14:51:26,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2204.84ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 56.2MB in the beginning and 81.9MB in the end (delta: -25.7MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. [2021-11-19 14:51:26,473 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 98.6MB. Free memory was 68.5MB in the beginning and 68.4MB in the end (delta: 28.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2204.84ms. Allocated memory was 98.6MB in the beginning and 144.7MB in the end (delta: 46.1MB). Free memory was 56.2MB in the beginning and 81.9MB in the end (delta: -25.7MB). Peak memory consumption was 19.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2886]: 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_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/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_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/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_5e494e51-dd16-424c-bf4e-65a716b61d47/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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 14:51:28,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 14:51:28,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 14:51:28,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 14:51:28,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 14:51:28,889 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 14:51:28,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 14:51:28,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 14:51:28,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 14:51:28,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 14:51:28,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 14:51:28,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 14:51:28,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 14:51:28,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 14:51:28,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 14:51:28,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 14:51:28,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 14:51:28,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 14:51:28,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 14:51:28,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 14:51:28,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 14:51:28,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 14:51:28,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 14:51:28,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 14:51:28,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 14:51:28,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 14:51:28,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 14:51:28,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 14:51:28,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 14:51:28,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 14:51:28,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 14:51:28,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 14:51:28,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 14:51:28,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 14:51:28,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 14:51:28,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 14:51:28,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 14:51:28,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 14:51:28,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 14:51:28,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 14:51:28,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 14:51:28,981 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 14:51:29,026 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 14:51:29,027 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 14:51:29,028 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 14:51:29,028 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 14:51:29,029 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 14:51:29,029 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 14:51:29,029 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 14:51:29,029 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 14:51:29,030 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 14:51:29,030 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 14:51:29,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 14:51:29,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 14:51:29,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 14:51:29,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 14:51:29,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 14:51:29,034 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 14:51:29,034 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 14:51:29,034 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 14:51:29,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 14:51:29,034 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 14:51:29,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 14:51:29,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 14:51:29,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 14:51:29,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 14:51:29,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:51:29,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 14:51:29,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 14:51:29,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 14:51:29,037 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 14:51:29,037 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 14:51:29,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 14:51:29,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 14:51:29,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 14:51:29,038 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_5e494e51-dd16-424c-bf4e-65a716b61d47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2021-11-19 14:51:29,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 14:51:29,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 14:51:29,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 14:51:29,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 14:51:29,469 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 14:51:29,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2021-11-19 14:51:29,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data/c99e4aa29/85332ece410247daa024146fba0079ae/FLAG79c4647e1 [2021-11-19 14:51:30,435 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 14:51:30,436 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2021-11-19 14:51:30,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data/c99e4aa29/85332ece410247daa024146fba0079ae/FLAG79c4647e1 [2021-11-19 14:51:30,928 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/data/c99e4aa29/85332ece410247daa024146fba0079ae [2021-11-19 14:51:30,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 14:51:30,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 14:51:30,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 14:51:30,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 14:51:30,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 14:51:30,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:30" (1/1) ... [2021-11-19 14:51:30,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@413a91a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:30, skipping insertion in model container [2021-11-19 14:51:30,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 02:51:30" (1/1) ... [2021-11-19 14:51:30,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 14:51:31,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:51:31,344 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_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2021-11-19 14:51:31,351 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_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2021-11-19 14:51:31,404 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:51:31,411 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:51:32,346 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:51:32,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,421 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,422 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,423 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,438 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,439 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,441 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,442 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:32,894 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:51:32,896 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:51:32,897 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:51:32,898 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:51:32,900 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:51:32,901 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:51:32,901 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:51:32,902 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:51:32,903 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:51:32,904 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:51:33,128 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,135 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,205 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:51:33,241 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 14:51:33,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 14:51:33,308 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_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2021-11-19 14:51:33,309 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_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2021-11-19 14:51:33,311 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:51:33,315 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:51:33,385 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:51:33,423 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,424 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,424 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,425 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,425 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,433 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,439 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,440 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,441 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:51:33,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:51:33,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:51:33,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:51:33,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:51:33,514 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:51:33,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:51:33,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:51:33,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:51:33,516 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:51:33,575 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,576 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,622 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:51:33,654 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 14:51:33,681 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_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2021-11-19 14:51:33,681 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_5e494e51-dd16-424c-bf4e-65a716b61d47/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2021-11-19 14:51:33,683 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 14:51:33,684 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 14:51:33,710 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 14:51:33,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,723 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,723 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,724 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,729 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,730 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,730 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,731 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,802 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 14:51:33,803 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 14:51:33,803 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 14:51:33,804 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 14:51:33,805 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 14:51:33,805 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 14:51:33,805 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 14:51:33,806 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 14:51:33,806 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 14:51:33,807 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 14:51:33,836 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,837 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 14:51:33,855 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 14:51:34,092 INFO L208 MainTranslator]: Completed translation [2021-11-19 14:51:34,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34 WrapperNode [2021-11-19 14:51:34,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 14:51:34,094 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 14:51:34,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 14:51:34,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 14:51:34,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,207 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,283 INFO L137 Inliner]: procedures = 711, calls = 1519, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 733 [2021-11-19 14:51:34,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 14:51:34,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 14:51:34,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 14:51:34,294 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 14:51:34,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,335 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,382 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 14:51:34,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 14:51:34,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 14:51:34,405 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 14:51:34,406 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (1/1) ... [2021-11-19 14:51:34,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 14:51:34,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:51:34,438 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 14:51:34,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 14:51:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-19 14:51:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-19 14:51:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 14:51:34,513 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-19 14:51:34,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-19 14:51:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 14:51:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 14:51:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 14:51:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 14:51:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 14:51:34,514 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-19 14:51:34,514 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-19 14:51:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 14:51:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 14:51:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 14:51:34,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 14:51:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 14:51:34,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 14:51:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 14:51:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 14:51:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 14:51:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 14:51:34,516 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 14:51:34,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 14:51:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 14:51:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-11-19 14:51:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-11-19 14:51:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 14:51:34,517 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 14:51:34,517 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 14:51:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 14:51:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-19 14:51:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-19 14:51:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 14:51:34,518 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 14:51:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 14:51:34,518 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 14:51:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 14:51:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 14:51:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 14:51:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 14:51:34,519 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 14:51:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 14:51:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 14:51:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 14:51:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2021-11-19 14:51:34,520 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2021-11-19 14:51:34,520 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-19 14:51:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-19 14:51:34,911 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 14:51:34,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 14:51:38,931 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 14:51:38,940 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 14:51:38,941 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 14:51:38,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:38 BoogieIcfgContainer [2021-11-19 14:51:38,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 14:51:38,946 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 14:51:38,946 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 14:51:38,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 14:51:38,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 02:51:30" (1/3) ... [2021-11-19 14:51:38,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc737bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:51:38, skipping insertion in model container [2021-11-19 14:51:38,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 02:51:34" (2/3) ... [2021-11-19 14:51:38,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dc737bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 02:51:38, skipping insertion in model container [2021-11-19 14:51:38,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 02:51:38" (3/3) ... [2021-11-19 14:51:38,952 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2021-11-19 14:51:38,958 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 14:51:38,958 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 14:51:39,010 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 14:51:39,016 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 14:51:39,017 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 14:51:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 203 states, 131 states have (on average 1.2595419847328244) internal successors, (165), 131 states have internal predecessors, (165), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-19 14:51:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-19 14:51:39,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:39,061 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-19 14:51:39,061 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:39,067 INFO L85 PathProgramCache]: Analyzing trace with hash -75346947, now seen corresponding path program 1 times [2021-11-19 14:51:39,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:39,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319036942] [2021-11-19 14:51:39,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:39,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:39,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:39,089 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:39,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 14:51:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:39,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 14:51:39,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 14:51:40,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-19 14:51:40,481 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:40,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319036942] [2021-11-19 14:51:40,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319036942] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:51:40,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:51:40,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 14:51:40,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826678127] [2021-11-19 14:51:40,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:40,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 14:51:40,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:40,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 14:51:40,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 14:51:40,531 INFO L87 Difference]: Start difference. First operand has 203 states, 131 states have (on average 1.2595419847328244) internal successors, (165), 131 states have internal predecessors, (165), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 14:51:40,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:40,632 INFO L93 Difference]: Finished difference Result 397 states and 581 transitions. [2021-11-19 14:51:40,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 14:51:40,634 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 110 [2021-11-19 14:51:40,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:40,656 INFO L225 Difference]: With dead ends: 397 [2021-11-19 14:51:40,656 INFO L226 Difference]: Without dead ends: 196 [2021-11-19 14:51:40,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 218 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 14:51:40,671 INFO L933 BasicCegarLoop]: 269 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, 269 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 14:51:40,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:51:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-19 14:51:40,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-11-19 14:51:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 123 states have (on average 1.2276422764227641) internal successors, (151), 125 states have internal predecessors, (151), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-19 14:51:40,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 261 transitions. [2021-11-19 14:51:40,773 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 261 transitions. Word has length 110 [2021-11-19 14:51:40,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:40,775 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 261 transitions. [2021-11-19 14:51:40,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-19 14:51:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 261 transitions. [2021-11-19 14:51:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-19 14:51:40,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:40,793 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:40,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 14:51:41,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:41,000 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:41,001 INFO L85 PathProgramCache]: Analyzing trace with hash 2056363122, now seen corresponding path program 1 times [2021-11-19 14:51:41,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:41,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347706796] [2021-11-19 14:51:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:41,004 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:41,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:41,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:41,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 14:51:41,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:41,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:51:41,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:42,257 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-19 14:51:42,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-19 14:51:42,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:42,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347706796] [2021-11-19 14:51:42,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347706796] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:51:42,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:51:42,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 14:51:42,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244904761] [2021-11-19 14:51:42,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:42,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:51:42,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:42,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:51:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:51:42,874 INFO L87 Difference]: Start difference. First operand 196 states and 261 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:51:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:43,077 INFO L93 Difference]: Finished difference Result 378 states and 497 transitions. [2021-11-19 14:51:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:51:43,078 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 144 [2021-11-19 14:51:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:43,082 INFO L225 Difference]: With dead ends: 378 [2021-11-19 14:51:43,082 INFO L226 Difference]: Without dead ends: 196 [2021-11-19 14:51:43,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:51:43,084 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 13 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:43,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1253 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:51:43,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-19 14:51:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2021-11-19 14:51:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 123 states have (on average 1.2195121951219512) internal successors, (150), 125 states have internal predecessors, (150), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-19 14:51:43,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 260 transitions. [2021-11-19 14:51:43,107 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 260 transitions. Word has length 144 [2021-11-19 14:51:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:43,108 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 260 transitions. [2021-11-19 14:51:43,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:51:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 260 transitions. [2021-11-19 14:51:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-19 14:51:43,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:43,112 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:43,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:43,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:43,326 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:43,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1347847460, now seen corresponding path program 1 times [2021-11-19 14:51:43,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:43,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271653005] [2021-11-19 14:51:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:43,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:43,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:43,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:43,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 14:51:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:44,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1391 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:51:44,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:44,642 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-19 14:51:44,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-19 14:51:45,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:45,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1271653005] [2021-11-19 14:51:45,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1271653005] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:51:45,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:51:45,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2021-11-19 14:51:45,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586485245] [2021-11-19 14:51:45,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:45,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:51:45,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:45,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:51:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:51:45,369 INFO L87 Difference]: Start difference. First operand 196 states and 260 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:51:45,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:45,625 INFO L93 Difference]: Finished difference Result 380 states and 498 transitions. [2021-11-19 14:51:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:51:45,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 146 [2021-11-19 14:51:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:45,629 INFO L225 Difference]: With dead ends: 380 [2021-11-19 14:51:45,629 INFO L226 Difference]: Without dead ends: 198 [2021-11-19 14:51:45,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:51:45,632 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 14 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:45,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1499 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:51:45,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-19 14:51:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-11-19 14:51:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 124 states have (on average 1.217741935483871) internal successors, (151), 126 states have internal predecessors, (151), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-11-19 14:51:45,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 261 transitions. [2021-11-19 14:51:45,651 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 261 transitions. Word has length 146 [2021-11-19 14:51:45,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:45,652 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 261 transitions. [2021-11-19 14:51:45,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-19 14:51:45,653 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 261 transitions. [2021-11-19 14:51:45,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 14:51:45,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:45,655 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:45,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:45,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:51:45,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:45,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:45,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1328553636, now seen corresponding path program 1 times [2021-11-19 14:51:45,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:45,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [597322463] [2021-11-19 14:51:45,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:45,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:45,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:45,881 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:45,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:51:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:46,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:51:46,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 153 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-19 14:51:47,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:48,356 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-11-19 14:51:48,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:48,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [597322463] [2021-11-19 14:51:48,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [597322463] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:48,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [260998735] [2021-11-19 14:51:48,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:48,357 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:51:48,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:51:48,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:51:48,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-11-19 14:51:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:48,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:51:48,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:49,425 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-19 14:51:49,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:49,865 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-11-19 14:51:49,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [260998735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:51:49,865 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 14:51:49,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8, 8] total 16 [2021-11-19 14:51:49,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746504773] [2021-11-19 14:51:49,866 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:51:49,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:51:49,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:51:49,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:51:49,869 INFO L87 Difference]: Start difference. First operand 197 states and 261 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:51:49,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:49,977 INFO L93 Difference]: Finished difference Result 300 states and 401 transitions. [2021-11-19 14:51:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 14:51:49,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2021-11-19 14:51:49,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:49,991 INFO L225 Difference]: With dead ends: 300 [2021-11-19 14:51:49,991 INFO L226 Difference]: Without dead ends: 201 [2021-11-19 14:51:49,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 597 GetRequests, 582 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:51:49,994 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 2 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:49,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1027 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:51:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-19 14:51:50,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 201. [2021-11-19 14:51:50,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 127 states have (on average 1.2125984251968505) internal successors, (154), 129 states have internal predecessors, (154), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2021-11-19 14:51:50,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 267 transitions. [2021-11-19 14:51:50,041 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 267 transitions. Word has length 150 [2021-11-19 14:51:50,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:50,045 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 267 transitions. [2021-11-19 14:51:50,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:51:50,045 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 267 transitions. [2021-11-19 14:51:50,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-19 14:51:50,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:50,054 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:50,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:50,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:50,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:51:50,461 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:50,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1426740676, now seen corresponding path program 1 times [2021-11-19 14:51:50,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:50,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169314718] [2021-11-19 14:51:50,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:50,464 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:50,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:50,466 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:50,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:51:51,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:51,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:51:51,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 159 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-19 14:51:51,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:52,746 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 14:51:52,746 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:51:52,746 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169314718] [2021-11-19 14:51:52,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169314718] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:52,747 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1485059337] [2021-11-19 14:51:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:52,747 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:51:52,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:51:52,749 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:51:52,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 14:51:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:55,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:51:55,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:55,597 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 159 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-19 14:51:55,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 14:51:56,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1485059337] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:56,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409442166] [2021-11-19 14:51:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:51:56,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:51:56,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:51:56,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:51:56,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 14:51:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:51:57,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:51:57,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:51:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 159 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-11-19 14:51:57,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:51:57,998 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-19 14:51:57,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409442166] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:51:57,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:51:57,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 13 [2021-11-19 14:51:57,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108473080] [2021-11-19 14:51:57,999 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:51:58,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 14:51:58,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:51:58,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 14:51:58,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:51:58,002 INFO L87 Difference]: Start difference. First operand 201 states and 267 transitions. Second operand has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 13 states have internal predecessors, (86), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-19 14:51:58,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:51:58,389 INFO L93 Difference]: Finished difference Result 391 states and 512 transitions. [2021-11-19 14:51:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:51:58,390 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 13 states have internal predecessors, (86), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 151 [2021-11-19 14:51:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:51:58,393 INFO L225 Difference]: With dead ends: 391 [2021-11-19 14:51:58,393 INFO L226 Difference]: Without dead ends: 204 [2021-11-19 14:51:58,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 903 GetRequests, 889 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:51:58,395 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 35 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:51:58,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1997 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 14:51:58,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-19 14:51:58,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2021-11-19 14:51:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 131 states have internal predecessors, (156), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2021-11-19 14:51:58,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 269 transitions. [2021-11-19 14:51:58,413 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 269 transitions. Word has length 151 [2021-11-19 14:51:58,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:51:58,414 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 269 transitions. [2021-11-19 14:51:58,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 13 states have internal predecessors, (86), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-19 14:51:58,415 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 269 transitions. [2021-11-19 14:51:58,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-19 14:51:58,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:51:58,418 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:51:58,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:58,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:51:58,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2021-11-19 14:51:59,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:51:59,042 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:51:59,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:51:59,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1066524740, now seen corresponding path program 2 times [2021-11-19 14:51:59,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:51:59,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878292669] [2021-11-19 14:51:59,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:51:59,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:51:59,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:51:59,046 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:51:59,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:52:08,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:52:08,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:08,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:52:08,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:08,987 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 167 proven. 4 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-19 14:52:08,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-19 14:52:09,890 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:52:09,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878292669] [2021-11-19 14:52:09,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878292669] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:09,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [425303567] [2021-11-19 14:52:09,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:52:09,911 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:52:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:52:09,915 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:52:09,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-19 14:52:45,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:52:45,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:52:46,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:52:46,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:52:46,548 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 167 proven. 4 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-19 14:52:46,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:52:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-19 14:52:47,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [425303567] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:52:47,214 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133089141] [2021-11-19 14:52:47,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:52:47,214 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:52:47,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:52:47,215 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:52:47,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-19 14:53:33,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:53:33,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:53:33,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 14:53:33,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:53:34,596 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 167 proven. 4 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-19 14:53:34,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:53:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-19 14:53:36,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133089141] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:53:36,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:53:36,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 10, 10] total 25 [2021-11-19 14:53:36,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131463878] [2021-11-19 14:53:36,160 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:53:36,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 14:53:36,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:53:36,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 14:53:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:53:36,164 INFO L87 Difference]: Start difference. First operand 203 states and 269 transitions. Second operand has 25 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 25 states have internal predecessors, (105), 8 states have call successors, (38), 2 states have call predecessors, (38), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2021-11-19 14:53:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:53:37,346 INFO L93 Difference]: Finished difference Result 395 states and 516 transitions. [2021-11-19 14:53:37,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:53:37,348 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 25 states have internal predecessors, (105), 8 states have call successors, (38), 2 states have call predecessors, (38), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) Word has length 155 [2021-11-19 14:53:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:53:37,351 INFO L225 Difference]: With dead ends: 395 [2021-11-19 14:53:37,351 INFO L226 Difference]: Without dead ends: 206 [2021-11-19 14:53:37,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 929 GetRequests, 901 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2021-11-19 14:53:37,353 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 50 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:53:37,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 2757 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 14:53:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-19 14:53:37,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 205. [2021-11-19 14:53:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 131 states have (on average 1.2061068702290076) internal successors, (158), 133 states have internal predecessors, (158), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2021-11-19 14:53:37,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 271 transitions. [2021-11-19 14:53:37,370 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 271 transitions. Word has length 155 [2021-11-19 14:53:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:53:37,371 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 271 transitions. [2021-11-19 14:53:37,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 4.7727272727272725) internal successors, (105), 25 states have internal predecessors, (105), 8 states have call successors, (38), 2 states have call predecessors, (38), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2021-11-19 14:53:37,372 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 271 transitions. [2021-11-19 14:53:37,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-19 14:53:37,374 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:53:37,374 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:53:37,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2021-11-19 14:53:37,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:37,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:53:37,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:53:37,986 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:53:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:53:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1687014340, now seen corresponding path program 3 times [2021-11-19 14:53:37,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:53:37,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513756018] [2021-11-19 14:53:37,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:53:37,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:53:37,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:53:37,989 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:53:37,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:54:09,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:54:09,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:54:09,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:54:09,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:54:10,501 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 49 proven. 9 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-19 14:54:10,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:54:12,024 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-19 14:54:12,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:54:12,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513756018] [2021-11-19 14:54:12,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513756018] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:54:12,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [574540300] [2021-11-19 14:54:12,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:54:12,025 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:54:12,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:54:12,025 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:54:12,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 14:55:16,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:55:16,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:55:16,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:55:16,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:55:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 49 proven. 9 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-19 14:55:17,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:55:18,056 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-19 14:55:18,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [574540300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:55:18,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705793954] [2021-11-19 14:55:18,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 14:55:18,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:55:18,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:55:18,059 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:55:18,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 14:57:41,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 14:57:41,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:41,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 1208 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:57:41,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 49 proven. 9 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-11-19 14:57:41,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:42,447 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2021-11-19 14:57:42,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705793954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:42,447 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:57:42,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 19 [2021-11-19 14:57:42,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623324011] [2021-11-19 14:57:42,448 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:57:42,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 14:57:42,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:42,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 14:57:42,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2021-11-19 14:57:42,450 INFO L87 Difference]: Start difference. First operand 205 states and 271 transitions. Second operand has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2021-11-19 14:57:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:43,475 INFO L93 Difference]: Finished difference Result 399 states and 520 transitions. [2021-11-19 14:57:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 14:57:43,477 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 159 [2021-11-19 14:57:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:43,480 INFO L225 Difference]: With dead ends: 399 [2021-11-19 14:57:43,480 INFO L226 Difference]: Without dead ends: 208 [2021-11-19 14:57:43,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 954 GetRequests, 929 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2021-11-19 14:57:43,482 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 41 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:43,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2503 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:57:43,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-19 14:57:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2021-11-19 14:57:43,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 135 states have internal predecessors, (160), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2021-11-19 14:57:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 273 transitions. [2021-11-19 14:57:43,497 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 273 transitions. Word has length 159 [2021-11-19 14:57:43,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:43,497 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 273 transitions. [2021-11-19 14:57:43,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 4.764705882352941) internal successors, (81), 19 states have internal predecessors, (81), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2021-11-19 14:57:43,498 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 273 transitions. [2021-11-19 14:57:43,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-19 14:57:43,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:43,501 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:43,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:43,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-19 14:57:43,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-19 14:57:44,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:44,125 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:57:44,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:44,125 INFO L85 PathProgramCache]: Analyzing trace with hash 671176772, now seen corresponding path program 4 times [2021-11-19 14:57:44,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:44,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789180178] [2021-11-19 14:57:44,127 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:57:44,127 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:44,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:44,128 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:44,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:57:44,861 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:57:44,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:44,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:57:44,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:45,426 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-19 14:57:45,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 14:57:46,720 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:46,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789180178] [2021-11-19 14:57:46,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789180178] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:46,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [438397709] [2021-11-19 14:57:46,720 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:57:46,720 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:46,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:57:46,721 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:57:46,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 14:57:49,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:57:49,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:49,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:57:49,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:49,575 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-19 14:57:49,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 14:57:50,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [438397709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:50,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764627635] [2021-11-19 14:57:50,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 14:57:50,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:57:50,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:57:50,299 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:57:50,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 14:57:51,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 14:57:51,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:51,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 14:57:51,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 195 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-19 14:57:51,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 366 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-11-19 14:57:53,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764627635] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:53,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:57:53,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 12, 12] total 31 [2021-11-19 14:57:53,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098053964] [2021-11-19 14:57:53,698 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:57:53,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-19 14:57:53,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:57:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-19 14:57:53,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=785, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:57:53,701 INFO L87 Difference]: Start difference. First operand 207 states and 273 transitions. Second operand has 31 states, 28 states have (on average 4.178571428571429) internal successors, (117), 31 states have internal predecessors, (117), 8 states have call successors, (38), 2 states have call predecessors, (38), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2021-11-19 14:57:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:57:55,043 INFO L93 Difference]: Finished difference Result 403 states and 524 transitions. [2021-11-19 14:57:55,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 14:57:55,045 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 4.178571428571429) internal successors, (117), 31 states have internal predecessors, (117), 8 states have call successors, (38), 2 states have call predecessors, (38), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) Word has length 163 [2021-11-19 14:57:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:57:55,047 INFO L225 Difference]: With dead ends: 403 [2021-11-19 14:57:55,047 INFO L226 Difference]: Without dead ends: 210 [2021-11-19 14:57:55,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 943 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=231, Invalid=1175, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 14:57:55,050 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 75 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3759 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:57:55,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 3759 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:57:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-19 14:57:55,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2021-11-19 14:57:55,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 135 states have (on average 1.2) internal successors, (162), 137 states have internal predecessors, (162), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2021-11-19 14:57:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 275 transitions. [2021-11-19 14:57:55,063 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 275 transitions. Word has length 163 [2021-11-19 14:57:55,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:57:55,064 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 275 transitions. [2021-11-19 14:57:55,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 4.178571428571429) internal successors, (117), 31 states have internal predecessors, (117), 8 states have call successors, (38), 2 states have call predecessors, (38), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2021-11-19 14:57:55,065 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 275 transitions. [2021-11-19 14:57:55,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-19 14:57:55,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:57:55,067 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:57:55,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:55,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:57:55,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-19 14:57:55,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:57:55,681 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:57:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:57:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1650443716, now seen corresponding path program 5 times [2021-11-19 14:57:55,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:57:55,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286043294] [2021-11-19 14:57:55,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:57:55,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:57:55,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:57:55,685 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:57:55,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:57:56,317 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-19 14:57:56,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:57:56,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:57:56,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:57:57,072 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 215 proven. 25 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-19 14:57:57,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:57:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-19 14:57:58,951 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:57:58,951 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286043294] [2021-11-19 14:57:58,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286043294] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:57:58,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1978745579] [2021-11-19 14:57:58,952 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:57:58,952 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:57:58,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:57:58,953 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:57:58,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 14:58:01,825 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-19 14:58:01,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:58:01,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:58:01,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:02,284 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 215 proven. 25 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-19 14:58:02,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:03,261 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-19 14:58:03,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1978745579] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:58:03,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675776836] [2021-11-19 14:58:03,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 14:58:03,262 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:58:03,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:58:03,262 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:58:03,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 14:58:08,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-19 14:58:08,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:58:08,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:58:08,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:58:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 215 proven. 25 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2021-11-19 14:58:09,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:58:10,291 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2021-11-19 14:58:10,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675776836] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:58:10,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:58:10,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 13, 13] total 23 [2021-11-19 14:58:10,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591289367] [2021-11-19 14:58:10,293 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:58:10,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 14:58:10,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:58:10,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 14:58:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:58:10,295 INFO L87 Difference]: Start difference. First operand 209 states and 275 transitions. Second operand has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-19 14:58:11,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:58:11,660 INFO L93 Difference]: Finished difference Result 407 states and 528 transitions. [2021-11-19 14:58:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 14:58:11,663 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 167 [2021-11-19 14:58:11,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:58:11,665 INFO L225 Difference]: With dead ends: 407 [2021-11-19 14:58:11,665 INFO L226 Difference]: Without dead ends: 212 [2021-11-19 14:58:11,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 975 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2021-11-19 14:58:11,667 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 53 mSDsluCounter, 3254 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3507 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:58:11,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 3507 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 14:58:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-19 14:58:11,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 211. [2021-11-19 14:58:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 137 states have (on average 1.197080291970803) internal successors, (164), 139 states have internal predecessors, (164), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2021-11-19 14:58:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 277 transitions. [2021-11-19 14:58:11,680 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 277 transitions. Word has length 167 [2021-11-19 14:58:11,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:58:11,681 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 277 transitions. [2021-11-19 14:58:11,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.857142857142857) internal successors, (102), 23 states have internal predecessors, (102), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-19 14:58:11,681 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 277 transitions. [2021-11-19 14:58:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-19 14:58:11,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:58:11,684 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:58:11,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:11,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:12,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:58:12,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:58:12,305 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:58:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:58:12,306 INFO L85 PathProgramCache]: Analyzing trace with hash -460565436, now seen corresponding path program 6 times [2021-11-19 14:58:12,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:58:12,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053523795] [2021-11-19 14:58:12,308 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 14:58:12,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:58:12,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:58:12,308 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:58:12,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 15:02:13,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-19 15:02:13,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:02:18,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:02:18,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:19,470 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 109 proven. 36 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2021-11-19 15:02:19,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 94 proven. 36 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-11-19 15:02:22,072 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:22,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053523795] [2021-11-19 15:02:22,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053523795] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:22,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1817017974] [2021-11-19 15:02:22,073 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 15:02:22,074 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:22,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:02:22,085 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:02:22,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-19 15:03:41,701 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 15:03:41,701 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392475427] [2021-11-19 15:03:41,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 15:03:41,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:03:41,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:03:41,713 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:03:41,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-19 15:03:41,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e494e51-dd16-424c-bf4e-65a716b61d47/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 1