./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:40:11,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:40:11,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:40:11,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:40:11,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:40:11,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:40:11,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:40:11,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:40:11,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:40:11,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:40:11,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:40:11,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:40:11,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:40:11,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:40:11,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:40:11,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:40:11,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:40:11,334 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:40:11,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:40:11,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:40:11,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:40:11,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:40:11,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:40:11,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:40:11,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:40:11,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:40:11,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:40:11,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:40:11,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:40:11,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:40:11,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:40:11,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:40:11,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:40:11,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:40:11,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:40:11,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:40:11,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:40:11,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:40:11,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:40:11,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:40:11,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:40:11,380 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:40:11,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:40:11,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:40:11,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:40:11,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:40:11,435 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:40:11,435 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:40:11,436 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:40:11,436 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:40:11,444 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:40:11,444 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:40:11,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:40:11,446 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:40:11,446 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:40:11,447 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:40:11,447 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:40:11,447 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:40:11,448 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:40:11,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:40:11,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:40:11,449 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:40:11,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:40:11,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:40:11,450 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:40:11,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:40:11,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:40:11,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:40:11,451 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:40:11,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:40:11,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:11,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:40:11,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:40:11,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:40:11,455 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:40:11,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:40:11,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:40:11,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:40:11,457 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:40:11,457 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_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 [2021-11-13 01:40:11,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:40:11,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:40:11,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:40:11,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:40:11,887 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:40:11,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2021-11-13 01:40:11,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data/71cf5aa71/c4886edb4b5c4be0835161de96ba9130/FLAGbde86d97b [2021-11-13 01:40:12,916 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:40:12,917 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2021-11-13 01:40:12,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data/71cf5aa71/c4886edb4b5c4be0835161de96ba9130/FLAGbde86d97b [2021-11-13 01:40:13,296 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data/71cf5aa71/c4886edb4b5c4be0835161de96ba9130 [2021-11-13 01:40:13,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:40:13,301 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:40:13,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:13,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:40:13,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:40:13,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:13" (1/1) ... [2021-11-13 01:40:13,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@637cf3f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:13, skipping insertion in model container [2021-11-13 01:40:13,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:13" (1/1) ... [2021-11-13 01:40:13,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:40:13,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:13,912 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2021-11-13 01:40:13,926 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2021-11-13 01:40:13,957 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:40:13,964 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:40:15,302 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,349 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,355 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,360 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,361 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:15,951 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:40:15,953 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:40:15,956 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:40:15,984 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:40:15,985 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:40:15,986 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:40:15,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:40:15,987 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:40:15,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:40:15,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:40:16,248 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:40:16,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,644 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,651 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,652 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,667 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,670 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:16,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:16,762 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) [2021-11-13 01:40:16,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@491d9da2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:16, skipping insertion in model container [2021-11-13 01:40:16,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:16,763 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:40:16,765 INFO L158 Benchmark]: Toolchain (without parser) took 3463.70ms. Allocated memory is still 117.4MB. Free memory was 89.5MB in the beginning and 50.8MB in the end (delta: 38.6MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2021-11-13 01:40:16,766 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:40:16,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3460.96ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 50.8MB in the end (delta: 38.3MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. [2021-11-13 01:40:16,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory is still 68.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3460.96ms. Allocated memory is still 117.4MB. Free memory was 89.1MB in the beginning and 50.8MB in the end (delta: 38.3MB). Peak memory consumption was 36.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:40:19,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:40:19,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:40:19,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:40:19,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:40:19,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:40:19,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:40:19,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:40:19,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:40:19,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:40:19,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:40:19,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:40:19,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:40:19,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:40:19,348 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:40:19,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:40:19,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:40:19,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:40:19,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:40:19,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:40:19,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:40:19,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:40:19,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:40:19,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:40:19,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:40:19,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:40:19,371 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:40:19,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:40:19,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:40:19,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:40:19,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:40:19,381 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:40:19,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:40:19,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:40:19,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:40:19,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:40:19,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:40:19,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:40:19,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:40:19,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:40:19,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:40:19,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:40:19,444 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:40:19,444 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:40:19,446 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:40:19,446 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:40:19,446 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:40:19,447 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:40:19,447 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:40:19,447 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:40:19,448 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:40:19,448 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:40:19,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:40:19,451 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:40:19,452 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:40:19,452 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:40:19,452 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:40:19,452 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:40:19,452 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:40:19,453 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:40:19,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:40:19,453 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:40:19,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:40:19,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:40:19,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:40:19,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:40:19,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:19,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:40:19,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:40:19,455 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:40:19,455 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:40:19,455 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:40:19,455 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:40:19,455 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:40:19,455 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:40:19,456 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_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b875da017a84450a4103e052cdea13d2bfe14ebd5ef6946815ef19c566574bb1 [2021-11-13 01:40:19,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:40:19,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:40:19,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:40:19,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:40:19,883 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:40:19,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2021-11-13 01:40:19,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data/68eaf4726/027a112b9a4f46c3a33e2af65ac838d5/FLAGb432a7a49 [2021-11-13 01:40:21,191 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:40:21,192 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i [2021-11-13 01:40:21,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data/68eaf4726/027a112b9a4f46c3a33e2af65ac838d5/FLAGb432a7a49 [2021-11-13 01:40:21,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/data/68eaf4726/027a112b9a4f46c3a33e2af65ac838d5 [2021-11-13 01:40:21,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:40:21,523 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:40:21,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:21,528 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:40:21,532 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:40:21,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:21" (1/1) ... [2021-11-13 01:40:21,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147a5d5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:21, skipping insertion in model container [2021-11-13 01:40:21,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:40:21" (1/1) ... [2021-11-13 01:40:21,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:40:21,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:22,082 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2021-11-13 01:40:22,090 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2021-11-13 01:40:22,118 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:40:22,125 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:40:23,401 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,402 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,402 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,403 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,405 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,421 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,422 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,424 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,425 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,427 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,428 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,429 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,430 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:23,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:40:23,999 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:40:24,000 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:40:24,001 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:40:24,003 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:40:24,004 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:40:24,004 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:40:24,005 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:40:24,006 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:40:24,010 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:40:24,273 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:40:24,743 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,744 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,788 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,789 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,820 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,820 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:24,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:24,961 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:40:25,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:40:25,042 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2021-11-13 01:40:25,043 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2021-11-13 01:40:25,046 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:40:25,047 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:40:25,093 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,094 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,095 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,095 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,103 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,104 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,105 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,107 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,109 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:40:25,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:40:25,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:40:25,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:40:25,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:40:25,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:40:25,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:40:25,161 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:40:25,162 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:40:25,163 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:40:25,202 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:40:25,331 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,331 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,343 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,351 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,352 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,353 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,354 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:25,435 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:40:25,460 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4493,4506] [2021-11-13 01:40:25,466 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness-1.i[4553,4566] [2021-11-13 01:40:25,473 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:40:25,474 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:40:25,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,513 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,515 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,522 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,523 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,524 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,527 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,528 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,529 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,602 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:40:25,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:40:25,605 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:40:25,606 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:40:25,622 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:40:25,623 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:40:25,623 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:40:25,624 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:40:25,625 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:40:25,626 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:40:25,652 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:40:25,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,834 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,835 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,855 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,855 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,856 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,857 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,858 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:40:25,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:40:26,304 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:40:26,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26 WrapperNode [2021-11-13 01:40:26,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:40:26,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:40:26,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:40:26,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:40:26,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,487 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:40:26,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:40:26,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:40:26,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:40:26,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,773 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:40:26,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:40:26,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:40:26,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:40:26,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (1/1) ... [2021-11-13 01:40:26,793 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:40:26,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:40:26,824 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:40:26,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-13 01:40:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-13 01:40:26,894 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-13 01:40:26,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:40:26,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:40:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-13 01:40:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-13 01:40:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:40:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:40:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:40:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:40:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:40:26,902 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:40:26,902 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-13 01:40:26,903 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-13 01:40:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-13 01:40:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 01:40:26,903 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 01:40:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:40:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-13 01:40:26,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-13 01:40:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-13 01:40:26,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:40:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:40:26,904 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:40:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-13 01:40:26,904 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-13 01:40:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:40:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:40:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:40:26,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:40:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2021-11-13 01:40:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2021-11-13 01:40:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-13 01:40:26,905 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-13 01:40:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 01:40:26,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:40:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:40:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-11-13 01:40:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-11-13 01:40:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:40:26,906 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:40:26,906 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-11-13 01:40:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-11-13 01:40:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:40:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 01:40:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:40:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-13 01:40:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-13 01:40:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:40:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-13 01:40:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-13 01:40:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-13 01:40:26,908 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-13 01:40:27,738 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2021-11-13 01:40:41,727 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:40:41,727 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-13 01:40:41,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:40:41 BoogieIcfgContainer [2021-11-13 01:40:41,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:40:41,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:40:41,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:40:41,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:40:41,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:40:21" (1/3) ... [2021-11-13 01:40:41,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18868c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:40:41, skipping insertion in model container [2021-11-13 01:40:41,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:40:26" (2/3) ... [2021-11-13 01:40:41,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18868c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:40:41, skipping insertion in model container [2021-11-13 01:40:41,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:40:41" (3/3) ... [2021-11-13 01:40:41,738 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness-1.i [2021-11-13 01:40:41,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:40:41,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:40:41,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:40:41,852 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 [2021-11-13 01:40:41,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:40:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 109 states have internal predecessors, (138), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-13 01:40:41,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 01:40:41,908 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:41,909 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:41,910 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:41,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash -879845289, now seen corresponding path program 1 times [2021-11-13 01:40:41,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:41,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413765001] [2021-11-13 01:40:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:41,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:41,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:41,984 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:41,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:40:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:46,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1827 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 01:40:46,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-13 01:40:46,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:47,355 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-11-13 01:40:47,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:47,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413765001] [2021-11-13 01:40:47,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413765001] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:40:47,357 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:40:47,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 01:40:47,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227405884] [2021-11-13 01:40:47,359 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:47,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 01:40:47,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:47,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 01:40:47,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:40:47,396 INFO L87 Difference]: Start difference. First operand has 167 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 109 states have internal predecessors, (138), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 01:40:47,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:47,440 INFO L93 Difference]: Finished difference Result 325 states and 445 transitions. [2021-11-13 01:40:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 01:40:47,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 144 [2021-11-13 01:40:47,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:47,455 INFO L225 Difference]: With dead ends: 325 [2021-11-13 01:40:47,455 INFO L226 Difference]: Without dead ends: 160 [2021-11-13 01:40:47,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 01:40:47,464 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:47,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 01:40:47,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-13 01:40:47,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-13 01:40:47,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 102 states have (on average 1.2352941176470589) internal successors, (126), 103 states have internal predecessors, (126), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-13 01:40:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 205 transitions. [2021-11-13 01:40:47,524 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 205 transitions. Word has length 144 [2021-11-13 01:40:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:47,526 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 205 transitions. [2021-11-13 01:40:47,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 01:40:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 205 transitions. [2021-11-13 01:40:47,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-13 01:40:47,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:47,534 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:47,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:47,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:47,758 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:47,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash 524131341, now seen corresponding path program 1 times [2021-11-13 01:40:47,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:47,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377838541] [2021-11-13 01:40:47,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:47,767 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:47,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:47,769 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:47,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:40:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:51,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1844 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:40:52,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-13 01:40:52,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-13 01:40:53,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:53,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377838541] [2021-11-13 01:40:53,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377838541] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:40:53,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:40:53,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:40:53,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244207378] [2021-11-13 01:40:53,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:53,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:40:53,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:53,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:40:53,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:40:53,311 INFO L87 Difference]: Start difference. First operand 160 states and 205 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 01:40:53,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:53,453 INFO L93 Difference]: Finished difference Result 312 states and 401 transitions. [2021-11-13 01:40:53,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:40:53,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2021-11-13 01:40:53,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:53,458 INFO L225 Difference]: With dead ends: 312 [2021-11-13 01:40:53,461 INFO L226 Difference]: Without dead ends: 164 [2021-11-13 01:40:53,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:40:53,467 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 2 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.20ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.61ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:53,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 808 Invalid, 11 Unknown, 0 Unchecked, 11.20ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 49.61ms Time] [2021-11-13 01:40:53,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-13 01:40:53,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-13 01:40:53,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 106 states have internal predecessors, (129), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2021-11-13 01:40:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2021-11-13 01:40:53,494 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 150 [2021-11-13 01:40:53,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:53,495 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2021-11-13 01:40:53,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 01:40:53,495 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2021-11-13 01:40:53,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-13 01:40:53,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:53,498 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:53,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:53,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:53,723 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash -992467699, now seen corresponding path program 1 times [2021-11-13 01:40:53,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:53,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912770954] [2021-11-13 01:40:53,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:53,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:53,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:53,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:53,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:40:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:57,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:40:57,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:40:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-13 01:40:58,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:40:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-13 01:40:58,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:40:58,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912770954] [2021-11-13 01:40:58,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912770954] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:40:58,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:40:58,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:40:58,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615176068] [2021-11-13 01:40:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:58,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:40:58,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:40:58,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:40:58,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:40:58,885 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 01:40:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:59,170 INFO L93 Difference]: Finished difference Result 318 states and 405 transitions. [2021-11-13 01:40:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:40:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 162 [2021-11-13 01:40:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:59,174 INFO L225 Difference]: With dead ends: 318 [2021-11-13 01:40:59,174 INFO L226 Difference]: Without dead ends: 166 [2021-11-13 01:40:59,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:40:59,176 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 210.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.76ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 229.86ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:59,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 78 Unknown, 0 Unchecked, 6.76ms Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 229.86ms Time] [2021-11-13 01:40:59,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-13 01:40:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-13 01:40:59,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 108 states have internal predecessors, (130), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2021-11-13 01:40:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2021-11-13 01:40:59,194 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 162 [2021-11-13 01:40:59,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:59,194 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2021-11-13 01:40:59,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 01:40:59,195 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2021-11-13 01:40:59,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-13 01:40:59,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:59,198 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:59,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:40:59,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:40:59,413 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:40:59,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash 841342826, now seen corresponding path program 1 times [2021-11-13 01:40:59,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:40:59,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722046706] [2021-11-13 01:40:59,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:59,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:40:59,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:40:59,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:40:59,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:41:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:03,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:41:03,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:03,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 01:41:05,116 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-13 01:41:05,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:05,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 01:41:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:41:06,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:06,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722046706] [2021-11-13 01:41:06,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722046706] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:06,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:06,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-13 01:41:06,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995795843] [2021-11-13 01:41:06,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:06,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:41:06,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:06,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:41:06,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:41:06,302 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-13 01:41:06,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:06,765 INFO L93 Difference]: Finished difference Result 321 states and 407 transitions. [2021-11-13 01:41:06,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:41:06,768 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 167 [2021-11-13 01:41:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:06,771 INFO L225 Difference]: With dead ends: 321 [2021-11-13 01:41:06,771 INFO L226 Difference]: Without dead ends: 175 [2021-11-13 01:41:06,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:41:06,773 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 14 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 355.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.45ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 370.06ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:06,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1154 Invalid, 84 Unknown, 0 Unchecked, 6.45ms Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 68 Unchecked, 370.06ms Time] [2021-11-13 01:41:06,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-13 01:41:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-13 01:41:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 114 states have (on average 1.2280701754385965) internal successors, (140), 116 states have internal predecessors, (140), 40 states have call successors, (40), 18 states have call predecessors, (40), 20 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-13 01:41:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 222 transitions. [2021-11-13 01:41:06,790 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 222 transitions. Word has length 167 [2021-11-13 01:41:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:06,791 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 222 transitions. [2021-11-13 01:41:06,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-13 01:41:06,792 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 222 transitions. [2021-11-13 01:41:06,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-13 01:41:06,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:06,795 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:06,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:07,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:07,018 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:07,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:07,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1872383724, now seen corresponding path program 1 times [2021-11-13 01:41:07,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:07,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1571344460] [2021-11-13 01:41:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:07,025 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:07,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:07,027 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:07,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:41:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:11,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1902 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:41:11,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-13 01:41:11,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:41:12,385 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:12,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1571344460] [2021-11-13 01:41:12,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1571344460] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:12,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:12,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-13 01:41:12,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673231541] [2021-11-13 01:41:12,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:12,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:41:12,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:12,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:41:12,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:41:12,387 INFO L87 Difference]: Start difference. First operand 175 states and 222 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:41:12,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:12,574 INFO L93 Difference]: Finished difference Result 325 states and 416 transitions. [2021-11-13 01:41:12,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:41:12,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 167 [2021-11-13 01:41:12,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:12,580 INFO L225 Difference]: With dead ends: 325 [2021-11-13 01:41:12,580 INFO L226 Difference]: Without dead ends: 177 [2021-11-13 01:41:12,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:41:12,582 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 21 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 144.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.77ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 162.84ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:12,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 766 Invalid, 38 Unknown, 0 Unchecked, 4.77ms Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 162.84ms Time] [2021-11-13 01:41:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-13 01:41:12,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-13 01:41:12,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 117 states have internal predecessors, (140), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2021-11-13 01:41:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 226 transitions. [2021-11-13 01:41:12,606 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 226 transitions. Word has length 167 [2021-11-13 01:41:12,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:12,607 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 226 transitions. [2021-11-13 01:41:12,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:41:12,607 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 226 transitions. [2021-11-13 01:41:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-13 01:41:12,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:12,611 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:12,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 01:41:12,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:12,826 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:12,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:12,827 INFO L85 PathProgramCache]: Analyzing trace with hash -2030398656, now seen corresponding path program 1 times [2021-11-13 01:41:12,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:12,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609561361] [2021-11-13 01:41:12,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:12,832 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:12,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:12,833 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:12,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:41:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:17,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 1919 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:41:17,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:17,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 01:41:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-13 01:41:18,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:19,454 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 01:41:19,751 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-13 01:41:19,751 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:19,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609561361] [2021-11-13 01:41:19,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609561361] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:19,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:19,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-13 01:41:19,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067413691] [2021-11-13 01:41:19,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:19,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:41:19,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:19,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:41:19,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:41:19,754 INFO L87 Difference]: Start difference. First operand 177 states and 226 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-13 01:41:20,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:20,330 INFO L93 Difference]: Finished difference Result 336 states and 429 transitions. [2021-11-13 01:41:20,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:41:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 173 [2021-11-13 01:41:20,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:20,335 INFO L225 Difference]: With dead ends: 336 [2021-11-13 01:41:20,335 INFO L226 Difference]: Without dead ends: 180 [2021-11-13 01:41:20,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:41:20,337 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 23 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 427.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 469.04ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:20,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 949 Invalid, 72 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 42 Unchecked, 469.04ms Time] [2021-11-13 01:41:20,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-13 01:41:20,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-13 01:41:20,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 119 states have internal predecessors, (142), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-13 01:41:20,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 230 transitions. [2021-11-13 01:41:20,353 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 230 transitions. Word has length 173 [2021-11-13 01:41:20,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:20,354 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 230 transitions. [2021-11-13 01:41:20,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-13 01:41:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 230 transitions. [2021-11-13 01:41:20,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-13 01:41:20,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:20,357 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:20,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:20,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:20,570 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:20,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:20,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2133509734, now seen corresponding path program 1 times [2021-11-13 01:41:20,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:20,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531289444] [2021-11-13 01:41:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:20,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:20,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:20,576 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:20,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:41:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:24,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1936 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:41:24,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-13 01:41:25,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-13 01:41:25,681 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:25,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531289444] [2021-11-13 01:41:25,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531289444] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:25,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:25,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:41:25,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054778087] [2021-11-13 01:41:25,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:25,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:41:25,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:41:25,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:41:25,683 INFO L87 Difference]: Start difference. First operand 180 states and 230 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:41:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:25,915 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-13 01:41:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:41:25,916 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 178 [2021-11-13 01:41:25,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:25,918 INFO L225 Difference]: With dead ends: 288 [2021-11-13 01:41:25,918 INFO L226 Difference]: Without dead ends: 178 [2021-11-13 01:41:25,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:41:25,920 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 165.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 197.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:25,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 78 Unknown, 0 Unchecked, 3.42ms Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 197.68ms Time] [2021-11-13 01:41:25,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-13 01:41:25,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2021-11-13 01:41:25,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 114 states have internal predecessors, (136), 42 states have call successors, (42), 19 states have call predecessors, (42), 18 states have return successors, (44), 40 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-13 01:41:25,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 222 transitions. [2021-11-13 01:41:25,935 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 222 transitions. Word has length 178 [2021-11-13 01:41:25,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:25,936 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 222 transitions. [2021-11-13 01:41:25,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:41:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 222 transitions. [2021-11-13 01:41:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 01:41:25,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:25,940 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:26,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:26,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:26,162 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:26,163 INFO L85 PathProgramCache]: Analyzing trace with hash 342535469, now seen corresponding path program 1 times [2021-11-13 01:41:26,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:26,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150657514] [2021-11-13 01:41:26,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:26,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:26,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:26,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:26,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:41:30,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:30,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 1983 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 01:41:30,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:30,879 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-13 01:41:30,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-13 01:41:31,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:31,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150657514] [2021-11-13 01:41:31,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150657514] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:31,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:31,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-13 01:41:31,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099938928] [2021-11-13 01:41:31,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:31,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:41:31,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:41:31,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:41:31,408 INFO L87 Difference]: Start difference. First operand 174 states and 222 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 01:41:31,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:31,660 INFO L93 Difference]: Finished difference Result 277 states and 361 transitions. [2021-11-13 01:41:31,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:41:31,661 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 183 [2021-11-13 01:41:31,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:31,663 INFO L225 Difference]: With dead ends: 277 [2021-11-13 01:41:31,664 INFO L226 Difference]: Without dead ends: 180 [2021-11-13 01:41:31,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:41:31,665 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 2 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 217.33ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:31,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1126 Invalid, 96 Unknown, 0 Unchecked, 3.81ms Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 217.33ms Time] [2021-11-13 01:41:31,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-13 01:41:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-13 01:41:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 120 states have internal predecessors, (140), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (49), 40 states have call predecessors, (49), 41 states have call successors, (49) [2021-11-13 01:41:31,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 231 transitions. [2021-11-13 01:41:31,679 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 231 transitions. Word has length 183 [2021-11-13 01:41:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:31,680 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 231 transitions. [2021-11-13 01:41:31,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-13 01:41:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 231 transitions. [2021-11-13 01:41:31,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-13 01:41:31,683 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:31,683 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:31,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:31,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:31,910 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:31,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:31,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2066741123, now seen corresponding path program 1 times [2021-11-13 01:41:31,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:31,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172308590] [2021-11-13 01:41:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:41:31,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:31,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:31,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:31,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:41:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:41:36,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 1997 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-13 01:41:36,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:41:37,633 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-13 01:41:37,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:41:38,723 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-13 01:41:38,723 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:41:38,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172308590] [2021-11-13 01:41:38,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172308590] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:41:38,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:41:38,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-13 01:41:38,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549298556] [2021-11-13 01:41:38,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:41:38,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:41:38,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:41:38,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:41:38,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:41:38,726 INFO L87 Difference]: Start difference. First operand 180 states and 231 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:41:40,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:42,950 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:46,489 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:47,667 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:41:47,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:41:47,905 INFO L93 Difference]: Finished difference Result 287 states and 381 transitions. [2021-11-13 01:41:47,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 01:41:47,908 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 189 [2021-11-13 01:41:47,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:41:47,911 INFO L225 Difference]: With dead ends: 287 [2021-11-13 01:41:47,911 INFO L226 Difference]: Without dead ends: 182 [2021-11-13 01:41:47,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:41:47,913 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 7 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8570.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 8796.80ms IncrementalHoareTripleChecker+Time [2021-11-13 01:41:47,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 899 Invalid, 124 Unknown, 0 Unchecked, 2.77ms Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 2 Unknown, 64 Unchecked, 8796.80ms Time] [2021-11-13 01:41:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-13 01:41:47,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2021-11-13 01:41:47,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 119 states have internal predecessors, (140), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-13 01:41:47,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 229 transitions. [2021-11-13 01:41:47,933 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 229 transitions. Word has length 189 [2021-11-13 01:41:47,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:41:47,934 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 229 transitions. [2021-11-13 01:41:47,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-13 01:41:47,934 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 229 transitions. [2021-11-13 01:41:47,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-13 01:41:47,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:41:47,940 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:41:48,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 01:41:48,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:41:48,162 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:41:48,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:41:48,163 INFO L85 PathProgramCache]: Analyzing trace with hash 752486313, now seen corresponding path program 2 times [2021-11-13 01:41:48,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:41:48,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121480731] [2021-11-13 01:41:48,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 01:41:48,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:41:48,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:41:48,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:41:48,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f9dec43-cf85-4cff-97a0-3ca918f52807/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process