./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/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_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/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_1416762a-5acb-405f-a026-81524b1814f9/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 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:23:39,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:23:39,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:23:39,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:23:39,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:23:39,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:23:39,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:23:39,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:23:39,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:23:39,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:23:39,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:23:39,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:23:39,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:23:39,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:23:39,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:23:39,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:23:39,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:23:39,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:23:39,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:23:39,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:23:39,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:23:39,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:23:39,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:23:39,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:23:39,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:23:39,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:23:39,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:23:39,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:23:39,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:23:39,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:23:39,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:23:39,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:23:39,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:23:39,836 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:23:39,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:23:39,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:23:39,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:23:39,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:23:39,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:23:39,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:23:39,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:23:39,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 22:23:39,871 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:23:39,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:23:39,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:23:39,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:23:39,872 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:23:39,873 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:23:39,873 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:23:39,873 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 22:23:39,873 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:23:39,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:23:39,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 22:23:39,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 22:23:39,874 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:23:39,874 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 22:23:39,874 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 22:23:39,875 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 22:23:39,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:23:39,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 22:23:39,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:23:39,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:23:39,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:23:39,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:23:39,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:23:39,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:23:39,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:23:39,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:23:39,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:23:39,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:23:39,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:23:39,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:23:39,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:23:39,878 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:23:39,879 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 22:23:39,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 22:23:39,879 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:23:39,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:23:39,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:23:39,880 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_1416762a-5acb-405f-a026-81524b1814f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 [2021-11-12 22:23:40,201 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:23:40,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:23:40,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:23:40,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:23:40,238 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:23:40,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-12 22:23:40,319 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data/caec37dfe/0807a78668dc47e78eb6ca9d206e32bd/FLAGcaf25dffb [2021-11-12 22:23:41,416 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:23:41,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-12 22:23:41,483 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data/caec37dfe/0807a78668dc47e78eb6ca9d206e32bd/FLAGcaf25dffb [2021-11-12 22:23:41,735 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data/caec37dfe/0807a78668dc47e78eb6ca9d206e32bd [2021-11-12 22:23:41,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:23:41,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:23:41,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:23:41,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:23:41,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:23:41,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:23:41" (1/1) ... [2021-11-12 22:23:41,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2108ffe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:41, skipping insertion in model container [2021-11-12 22:23:41,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:23:41" (1/1) ... [2021-11-12 22:23:41,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:23:41,886 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:23:42,339 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_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-12 22:23:42,350 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_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-12 22:23:42,392 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:23:42,403 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:23:43,783 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,784 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,785 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,786 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,787 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,806 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,807 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,810 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,811 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,815 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:43,818 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:44,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:23:44,512 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:23:44,513 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:23:44,515 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:23:44,517 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:23:44,518 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:23:44,519 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:23:44,520 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:23:44,521 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:23:44,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:23:44,800 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:23:45,211 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,212 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,240 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,255 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,297 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,299 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,300 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,301 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:45,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:23:45,435 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 22:23:45,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1a85c63f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:45, skipping insertion in model container [2021-11-12 22:23:45,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:23:45,437 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 22:23:45,440 INFO L158 Benchmark]: Toolchain (without parser) took 3698.08ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 67.1MB in the beginning and 66.0MB in the end (delta: 1.0MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2021-11-12 22:23:45,441 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 73.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 22:23:45,443 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3695.25ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 67.1MB in the beginning and 66.0MB in the end (delta: 1.0MB). Peak memory consumption was 42.9MB. Max. memory is 16.1GB. [2021-11-12 22:23:45,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 96.5MB. Free memory was 73.5MB in the beginning and 73.4MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3695.25ms. Allocated memory was 96.5MB in the beginning and 136.3MB in the end (delta: 39.8MB). Free memory was 67.1MB in the beginning and 66.0MB in the end (delta: 1.0MB). Peak memory consumption was 42.9MB. 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_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/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_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/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_1416762a-5acb-405f-a026-81524b1814f9/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 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 22:23:48,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 22:23:48,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 22:23:48,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 22:23:48,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 22:23:48,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 22:23:48,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 22:23:48,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 22:23:48,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 22:23:48,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 22:23:48,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 22:23:48,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 22:23:48,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 22:23:48,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 22:23:48,330 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 22:23:48,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 22:23:48,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 22:23:48,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 22:23:48,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 22:23:48,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 22:23:48,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 22:23:48,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 22:23:48,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 22:23:48,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 22:23:48,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 22:23:48,354 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 22:23:48,355 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 22:23:48,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 22:23:48,357 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 22:23:48,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 22:23:48,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 22:23:48,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 22:23:48,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 22:23:48,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 22:23:48,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 22:23:48,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 22:23:48,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 22:23:48,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 22:23:48,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 22:23:48,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 22:23:48,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 22:23:48,382 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 22:23:48,446 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 22:23:48,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 22:23:48,448 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 22:23:48,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 22:23:48,449 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 22:23:48,449 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 22:23:48,449 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 22:23:48,450 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 22:23:48,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 22:23:48,450 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 22:23:48,453 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 22:23:48,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 22:23:48,454 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 22:23:48,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 22:23:48,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 22:23:48,454 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 22:23:48,455 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 22:23:48,455 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 22:23:48,455 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 22:23:48,456 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 22:23:48,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 22:23:48,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 22:23:48,456 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 22:23:48,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 22:23:48,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:23:48,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 22:23:48,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 22:23:48,458 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 22:23:48,458 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 22:23:48,458 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 22:23:48,459 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 22:23:48,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 22:23:48,459 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 22:23:48,460 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_1416762a-5acb-405f-a026-81524b1814f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bf4efa014e51efebc29a26fae4d93bdd4ac97a340040c60e527138ec3a88197 [2021-11-12 22:23:48,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 22:23:48,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 22:23:48,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 22:23:48,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 22:23:48,990 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 22:23:48,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-12 22:23:49,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data/1debd5a95/40a3559937ed43c59743c30318e67380/FLAGc652081d6 [2021-11-12 22:23:50,253 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 22:23:50,255 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i [2021-11-12 22:23:50,322 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data/1debd5a95/40a3559937ed43c59743c30318e67380/FLAGc652081d6 [2021-11-12 22:23:50,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/data/1debd5a95/40a3559937ed43c59743c30318e67380 [2021-11-12 22:23:50,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 22:23:50,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 22:23:50,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 22:23:50,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 22:23:50,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 22:23:50,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:23:50" (1/1) ... [2021-11-12 22:23:50,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69002c3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:50, skipping insertion in model container [2021-11-12 22:23:50,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 10:23:50" (1/1) ... [2021-11-12 22:23:50,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 22:23:50,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:23:51,264 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_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-12 22:23:51,274 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_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-12 22:23:51,313 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:23:51,321 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:23:52,737 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,738 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,739 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,740 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,741 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,759 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,760 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,766 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,769 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:52,770 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:53,432 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:23:53,434 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:23:53,435 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:23:53,437 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:23:53,439 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:23:53,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:23:53,441 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:23:53,441 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:23:53,442 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:23:53,443 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:23:53,732 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:23:54,234 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,235 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,286 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,298 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,311 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,338 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,340 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,341 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:23:54,426 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 22:23:54,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 22:23:54,523 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_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-12 22:23:54,524 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_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-12 22:23:54,529 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:23:54,530 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:23:54,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,606 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,619 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,620 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,621 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,622 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,638 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,639 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,639 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,713 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:23:54,715 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:23:54,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:23:54,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:23:54,720 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:23:54,721 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:23:54,722 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:23:54,723 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:23:54,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:23:54,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:23:54,780 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:23:54,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:54,995 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,015 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,016 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,032 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,033 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,065 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:23:55,116 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 22:23:55,148 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_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4497,4510] [2021-11-12 22:23:55,149 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_1416762a-5acb-405f-a026-81524b1814f9/sv-benchmarks/c/aws-c-common/aws_hash_table_clean_up_harness.i[4557,4570] [2021-11-12 22:23:55,151 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 22:23:55,152 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 22:23:55,194 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,196 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,196 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,197 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,205 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,206 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,207 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,209 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,211 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,212 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,212 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 22:23:55,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 22:23:55,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 22:23:55,292 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 22:23:55,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 22:23:55,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 22:23:55,294 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 22:23:55,294 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 22:23:55,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 22:23:55,296 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 22:23:55,321 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 22:23:55,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,514 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,518 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,519 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,530 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,531 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 22:23:55,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 22:23:55,992 INFO L208 MainTranslator]: Completed translation [2021-11-12 22:23:55,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55 WrapperNode [2021-11-12 22:23:55,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 22:23:55,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 22:23:55,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 22:23:55,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 22:23:56,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,253 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 22:23:56,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 22:23:56,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 22:23:56,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 22:23:56,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 22:23:56,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 22:23:56,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 22:23:56,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 22:23:56,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (1/1) ... [2021-11-12 22:23:56,481 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 22:23:56,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 22:23:56,549 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 22:23:56,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 22:23:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2021-11-12 22:23:56,595 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2021-11-12 22:23:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 22:23:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 22:23:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 22:23:56,596 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 22:23:56,596 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 22:23:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 22:23:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 22:23:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-12 22:23:56,597 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-12 22:23:56,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 22:23:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 22:23:56,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 22:23:56,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 22:23:56,599 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-12 22:23:56,599 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-12 22:23:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 22:23:56,600 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 22:23:56,600 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-12 22:23:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-12 22:23:56,601 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-12 22:23:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 22:23:56,601 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-12 22:23:56,601 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-12 22:23:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 22:23:56,602 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 22:23:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-12 22:23:56,603 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-12 22:23:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-12 22:23:56,603 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-12 22:23:56,603 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-12 22:23:56,604 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-12 22:23:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 22:23:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 22:23:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 22:23:56,604 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-12 22:23:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-12 22:23:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:23:56,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-12 22:23:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 22:23:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 22:23:56,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 22:23:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 22:23:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 22:23:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-12 22:23:56,606 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-12 22:23:56,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 22:23:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 22:23:56,607 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 22:23:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 22:23:56,607 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 22:23:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-12 22:23:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-12 22:24:12,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 22:24:12,156 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 22:24:12,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:24:12 BoogieIcfgContainer [2021-11-12 22:24:12,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 22:24:12,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 22:24:12,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 22:24:12,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 22:24:12,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 10:23:50" (1/3) ... [2021-11-12 22:24:12,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b6ea7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:24:12, skipping insertion in model container [2021-11-12 22:24:12,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 10:23:55" (2/3) ... [2021-11-12 22:24:12,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b6ea7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 10:24:12, skipping insertion in model container [2021-11-12 22:24:12,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 10:24:12" (3/3) ... [2021-11-12 22:24:12,168 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clean_up_harness.i [2021-11-12 22:24:12,175 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 22:24:12,175 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 22:24:12,234 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 22:24:12,241 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 22:24:12,242 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 22:24:12,266 INFO L276 IsEmpty]: Start isEmpty. Operand has 191 states, 123 states have (on average 1.2032520325203253) internal successors, (148), 124 states have internal predecessors, (148), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-11-12 22:24:12,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-12 22:24:12,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:12,283 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-12 22:24:12,284 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:24:12,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:12,290 INFO L85 PathProgramCache]: Analyzing trace with hash -896579534, now seen corresponding path program 1 times [2021-11-12 22:24:12,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:12,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653054576] [2021-11-12 22:24:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:12,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:12,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:12,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:12,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 22:24:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:17,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 22:24:17,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:24:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-12 22:24:17,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:24:18,029 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-12 22:24:18,030 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:24:18,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653054576] [2021-11-12 22:24:18,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653054576] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:24:18,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:24:18,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 22:24:18,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503619448] [2021-11-12 22:24:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:24:18,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 22:24:18,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:24:18,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 22:24:18,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:24:18,099 INFO L87 Difference]: Start difference. First operand has 191 states, 123 states have (on average 1.2032520325203253) internal successors, (148), 124 states have internal predecessors, (148), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:24:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:24:18,153 INFO L93 Difference]: Finished difference Result 377 states and 502 transitions. [2021-11-12 22:24:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 22:24:18,158 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2021-11-12 22:24:18,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:24:18,168 INFO L225 Difference]: With dead ends: 377 [2021-11-12 22:24:18,168 INFO L226 Difference]: Without dead ends: 184 [2021-11-12 22:24:18,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 22:24:18,177 INFO L933 BasicCegarLoop]: 238 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, 238 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.56ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:24:18,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 3.56ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 22:24:18,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-12 22:24:18,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-12 22:24:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 117 states have (on average 1.170940170940171) internal successors, (137), 118 states have internal predecessors, (137), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-12 22:24:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 230 transitions. [2021-11-12 22:24:18,240 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 230 transitions. Word has length 132 [2021-11-12 22:24:18,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:24:18,242 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 230 transitions. [2021-11-12 22:24:18,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 22:24:18,243 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 230 transitions. [2021-11-12 22:24:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-12 22:24:18,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:18,249 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-12 22:24:18,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 22:24:18,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:24:18,453 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:24:18,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:18,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1093106438, now seen corresponding path program 1 times [2021-11-12 22:24:18,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:18,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026782616] [2021-11-12 22:24:18,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:18,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:18,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:18,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:18,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 22:24:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:23,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 22:24:23,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:24:23,855 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-11-12 22:24:23,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:24:24,478 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-12 22:24:24,478 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:24:24,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026782616] [2021-11-12 22:24:24,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026782616] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:24:24,479 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:24:24,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:24:24,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760035505] [2021-11-12 22:24:24,480 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:24:24,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:24:24,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:24:24,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:24:24,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:24:24,485 INFO L87 Difference]: Start difference. First operand 184 states and 230 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 22:24:24,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:24:24,628 INFO L93 Difference]: Finished difference Result 332 states and 416 transitions. [2021-11-12 22:24:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:24:24,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 132 [2021-11-12 22:24:24,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:24:24,639 INFO L225 Difference]: With dead ends: 332 [2021-11-12 22:24:24,642 INFO L226 Difference]: Without dead ends: 188 [2021-11-12 22:24:24,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:24:24,650 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 2 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.00ms IncrementalHoareTripleChecker+Time [2021-11-12 22:24:24,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 908 Invalid, 11 Unknown, 0 Unchecked, 11.41ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 61.00ms Time] [2021-11-12 22:24:24,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-12 22:24:24,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-11-12 22:24:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 121 states have internal predecessors, (140), 47 states have call successors, (47), 19 states have call predecessors, (47), 20 states have return successors, (47), 47 states have call predecessors, (47), 46 states have call successors, (47) [2021-11-12 22:24:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 234 transitions. [2021-11-12 22:24:24,709 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 234 transitions. Word has length 132 [2021-11-12 22:24:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:24:24,712 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 234 transitions. [2021-11-12 22:24:24,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-12 22:24:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 234 transitions. [2021-11-12 22:24:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-12 22:24:24,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:24,724 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:24:24,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 22:24:24,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:24:24,947 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:24:24,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:24,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1275490624, now seen corresponding path program 1 times [2021-11-12 22:24:24,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:24,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106106885] [2021-11-12 22:24:24,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:24,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:24,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:24,958 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:24,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 22:24:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:29,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 1730 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:24:29,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:24:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-12 22:24:30,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:24:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-12 22:24:30,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:24:30,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106106885] [2021-11-12 22:24:30,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106106885] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 22:24:30,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 22:24:30,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-12 22:24:30,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538147491] [2021-11-12 22:24:30,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 22:24:30,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:24:30,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:24:30,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:24:30,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:24:30,813 INFO L87 Difference]: Start difference. First operand 188 states and 234 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 22:24:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:24:31,270 INFO L93 Difference]: Finished difference Result 332 states and 415 transitions. [2021-11-12 22:24:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:24:31,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 138 [2021-11-12 22:24:31,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:24:31,278 INFO L225 Difference]: With dead ends: 332 [2021-11-12 22:24:31,278 INFO L226 Difference]: Without dead ends: 188 [2021-11-12 22:24:31,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-12 22:24:31,280 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 2 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 328.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.72ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 384.25ms IncrementalHoareTripleChecker+Time [2021-11-12 22:24:31,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1031 Invalid, 113 Unknown, 0 Unchecked, 11.72ms Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 384.25ms Time] [2021-11-12 22:24:31,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-12 22:24:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 184. [2021-11-12 22:24:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 117 states have (on average 1.1538461538461537) internal successors, (135), 118 states have internal predecessors, (135), 47 states have call successors, (47), 19 states have call predecessors, (47), 19 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-12 22:24:31,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 228 transitions. [2021-11-12 22:24:31,323 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 228 transitions. Word has length 138 [2021-11-12 22:24:31,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:24:31,324 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 228 transitions. [2021-11-12 22:24:31,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-12 22:24:31,324 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 228 transitions. [2021-11-12 22:24:31,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-12 22:24:31,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:31,332 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:24:31,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 22:24:31,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:24:31,554 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:24:31,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:31,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1416298467, now seen corresponding path program 1 times [2021-11-12 22:24:31,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:31,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1017364234] [2021-11-12 22:24:31,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:31,560 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:31,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:31,561 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:31,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 22:24:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:35,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:24:35,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:24:36,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 22:24:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-12 22:24:37,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:24:38,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-12 22:24:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-12 22:24:38,858 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:24:38,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1017364234] [2021-11-12 22:24:38,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1017364234] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:24:38,859 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:24:38,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 15 [2021-11-12 22:24:38,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027075481] [2021-11-12 22:24:38,859 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:24:38,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-12 22:24:38,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:24:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-12 22:24:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-12 22:24:38,862 INFO L87 Difference]: Start difference. First operand 184 states and 228 transitions. Second operand has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-12 22:24:41,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:24:43,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:24:45,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:24:47,225 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:24:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:24:49,594 INFO L93 Difference]: Finished difference Result 335 states and 421 transitions. [2021-11-12 22:24:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 22:24:49,596 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) Word has length 143 [2021-11-12 22:24:49,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:24:49,601 INFO L225 Difference]: With dead ends: 335 [2021-11-12 22:24:49,601 INFO L226 Difference]: Without dead ends: 201 [2021-11-12 22:24:49,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:24:49,603 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 29 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10343.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2004 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 10583.66ms IncrementalHoareTripleChecker+Time [2021-11-12 22:24:49,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2004 Invalid, 267 Unknown, 0 Unchecked, 11.95ms Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 4 Unknown, 84 Unchecked, 10583.66ms Time] [2021-11-12 22:24:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-12 22:24:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 196. [2021-11-12 22:24:49,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 127 states have (on average 1.1574803149606299) internal successors, (147), 129 states have internal predecessors, (147), 47 states have call successors, (47), 20 states have call predecessors, (47), 21 states have return successors, (50), 46 states have call predecessors, (50), 46 states have call successors, (50) [2021-11-12 22:24:49,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 244 transitions. [2021-11-12 22:24:49,625 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 244 transitions. Word has length 143 [2021-11-12 22:24:49,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:24:49,626 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 244 transitions. [2021-11-12 22:24:49,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.333333333333333) internal successors, (80), 13 states have internal predecessors, (80), 4 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (34), 4 states have call predecessors, (34), 4 states have call successors, (34) [2021-11-12 22:24:49,627 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 244 transitions. [2021-11-12 22:24:49,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-12 22:24:49,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:49,630 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:24:49,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 22:24:49,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:24:49,854 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:24:49,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:49,855 INFO L85 PathProgramCache]: Analyzing trace with hash 317805983, now seen corresponding path program 1 times [2021-11-12 22:24:49,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:49,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451754883] [2021-11-12 22:24:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:49,858 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:49,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:49,859 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:49,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 22:24:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:54,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 22:24:54,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:24:54,715 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-12 22:24:54,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:24:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-12 22:24:55,378 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:24:55,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451754883] [2021-11-12 22:24:55,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451754883] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:24:55,378 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:24:55,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 22:24:55,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201314476] [2021-11-12 22:24:55,379 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:24:55,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 22:24:55,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:24:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 22:24:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:24:55,381 INFO L87 Difference]: Start difference. First operand 196 states and 244 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-12 22:24:55,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:24:55,541 INFO L93 Difference]: Finished difference Result 340 states and 431 transitions. [2021-11-12 22:24:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 22:24:55,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) Word has length 143 [2021-11-12 22:24:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:24:55,545 INFO L225 Difference]: With dead ends: 340 [2021-11-12 22:24:55,545 INFO L226 Difference]: Without dead ends: 201 [2021-11-12 22:24:55,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 22:24:55,547 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 61 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.11ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 142.62ms IncrementalHoareTripleChecker+Time [2021-11-12 22:24:55,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 581 Invalid, 31 Unknown, 0 Unchecked, 3.11ms Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 142.62ms Time] [2021-11-12 22:24:55,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-11-12 22:24:55,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 195. [2021-11-12 22:24:55,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 126 states have (on average 1.1507936507936507) internal successors, (145), 127 states have internal predecessors, (145), 48 states have call successors, (48), 20 states have call predecessors, (48), 20 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2021-11-12 22:24:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 243 transitions. [2021-11-12 22:24:55,568 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 243 transitions. Word has length 143 [2021-11-12 22:24:55,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:24:55,569 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 243 transitions. [2021-11-12 22:24:55,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (33), 3 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-12 22:24:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 243 transitions. [2021-11-12 22:24:55,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-12 22:24:55,572 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:24:55,572 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:24:55,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 22:24:55,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:24:55,794 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:24:55,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:24:55,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1539976143, now seen corresponding path program 1 times [2021-11-12 22:24:55,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:24:55,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53980513] [2021-11-12 22:24:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:24:55,798 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:24:55,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:24:55,799 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:24:55,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 22:24:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:24:59,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-12 22:24:59,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:00,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 22:25:01,324 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-12 22:25:01,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:02,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-12 22:25:02,840 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-11-12 22:25:02,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:02,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53980513] [2021-11-12 22:25:02,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [53980513] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:02,840 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:02,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 17 [2021-11-12 22:25:02,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976349742] [2021-11-12 22:25:02,840 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:02,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-12 22:25:02,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:02,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-12 22:25:02,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-12 22:25:02,842 INFO L87 Difference]: Start difference. First operand 195 states and 243 transitions. Second operand has 17 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 6 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-12 22:25:05,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:06,869 INFO L93 Difference]: Finished difference Result 355 states and 450 transitions. [2021-11-12 22:25:06,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-12 22:25:06,870 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 6 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 149 [2021-11-12 22:25:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:06,874 INFO L225 Difference]: With dead ends: 355 [2021-11-12 22:25:06,874 INFO L226 Difference]: Without dead ends: 211 [2021-11-12 22:25:06,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:25:06,876 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 77 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3696.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.40ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 200 IncrementalHoareTripleChecker+Unchecked, 3884.60ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:06,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 1949 Invalid, 347 Unknown, 0 Unchecked, 8.40ms Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 1 Unknown, 200 Unchecked, 3884.60ms Time] [2021-11-12 22:25:06,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-12 22:25:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 200. [2021-11-12 22:25:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 129 states have (on average 1.1472868217054264) internal successors, (148), 131 states have internal predecessors, (148), 49 states have call successors, (49), 21 states have call predecessors, (49), 21 states have return successors, (53), 47 states have call predecessors, (53), 48 states have call successors, (53) [2021-11-12 22:25:06,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 250 transitions. [2021-11-12 22:25:06,896 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 250 transitions. Word has length 149 [2021-11-12 22:25:06,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:06,897 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 250 transitions. [2021-11-12 22:25:06,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.866666666666666) internal successors, (88), 15 states have internal predecessors, (88), 6 states have call successors, (37), 3 states have call predecessors, (37), 7 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2021-11-12 22:25:06,898 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 250 transitions. [2021-11-12 22:25:06,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-12 22:25:06,900 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:06,901 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:06,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:07,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:07,116 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1940621115, now seen corresponding path program 1 times [2021-11-12 22:25:07,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:07,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168382909] [2021-11-12 22:25:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:07,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:07,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:07,120 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:07,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 22:25:11,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:11,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:25:11,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:11,969 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 29 treesize of output 21 [2021-11-12 22:25:11,974 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 18 treesize of output 10 [2021-11-12 22:25:12,118 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 22:25:12,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:12,475 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-12 22:25:12,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-12 22:25:12,490 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-12 22:25:12,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-12 22:25:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-11-12 22:25:12,757 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:12,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168382909] [2021-11-12 22:25:12,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168382909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:12,757 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:12,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 12 [2021-11-12 22:25:12,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372757759] [2021-11-12 22:25:12,758 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:12,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-12 22:25:12,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:12,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-12 22:25:12,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-12 22:25:12,759 INFO L87 Difference]: Start difference. First operand 200 states and 250 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:25:14,958 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:17,255 INFO L93 Difference]: Finished difference Result 267 states and 343 transitions. [2021-11-12 22:25:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:25:17,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 154 [2021-11-12 22:25:17,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:17,260 INFO L225 Difference]: With dead ends: 267 [2021-11-12 22:25:17,260 INFO L226 Difference]: Without dead ends: 265 [2021-11-12 22:25:17,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:25:17,262 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 103 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3764.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 2195 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.15ms SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 4013.04ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:17,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 2195 Invalid, 368 Unknown, 0 Unchecked, 8.15ms Time], IncrementalHoareTripleChecker [27 Valid, 290 Invalid, 1 Unknown, 50 Unchecked, 4013.04ms Time] [2021-11-12 22:25:17,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-12 22:25:17,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 240. [2021-11-12 22:25:17,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 159 states have internal predecessors, (182), 60 states have call successors, (60), 23 states have call predecessors, (60), 23 states have return successors, (66), 57 states have call predecessors, (66), 59 states have call successors, (66) [2021-11-12 22:25:17,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 308 transitions. [2021-11-12 22:25:17,285 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 308 transitions. Word has length 154 [2021-11-12 22:25:17,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:17,286 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 308 transitions. [2021-11-12 22:25:17,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (28), 4 states have call predecessors, (28), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-12 22:25:17,287 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 308 transitions. [2021-11-12 22:25:17,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-12 22:25:17,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:17,290 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:17,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:17,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:17,506 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:17,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:17,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1709128455, now seen corresponding path program 1 times [2021-11-12 22:25:17,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:17,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657792934] [2021-11-12 22:25:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:17,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:17,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:17,511 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:17,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 22:25:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:21,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 1825 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:25:21,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:23,415 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 22:25:23,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:25:24,602 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:24,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657792934] [2021-11-12 22:25:24,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1657792934] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:24,602 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:24,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-12 22:25:24,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440692673] [2021-11-12 22:25:24,602 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:24,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-12 22:25:24,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-12 22:25:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-12 22:25:24,604 INFO L87 Difference]: Start difference. First operand 240 states and 308 transitions. Second operand has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-12 22:25:26,804 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:28,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:30,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:30,261 INFO L93 Difference]: Finished difference Result 372 states and 476 transitions. [2021-11-12 22:25:30,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-12 22:25:30,263 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 3 states have call successors, (28) Word has length 163 [2021-11-12 22:25:30,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:30,266 INFO L225 Difference]: With dead ends: 372 [2021-11-12 22:25:30,266 INFO L226 Difference]: Without dead ends: 255 [2021-11-12 22:25:30,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-12 22:25:30,268 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 29 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5049.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.74ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 5203.59ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:30,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2147 Invalid, 245 Unknown, 0 Unchecked, 5.74ms Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 2 Unknown, 155 Unchecked, 5203.59ms Time] [2021-11-12 22:25:30,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-12 22:25:30,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 252. [2021-11-12 22:25:30,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 166 states have (on average 1.1686746987951808) internal successors, (194), 170 states have internal predecessors, (194), 60 states have call successors, (60), 24 states have call predecessors, (60), 25 states have return successors, (71), 57 states have call predecessors, (71), 59 states have call successors, (71) [2021-11-12 22:25:30,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 325 transitions. [2021-11-12 22:25:30,292 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 325 transitions. Word has length 163 [2021-11-12 22:25:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:30,293 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 325 transitions. [2021-11-12 22:25:30,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 3 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (28), 2 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-12 22:25:30,293 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 325 transitions. [2021-11-12 22:25:30,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-12 22:25:30,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:30,296 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:30,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:30,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:30,516 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:30,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:30,517 INFO L85 PathProgramCache]: Analyzing trace with hash 896895099, now seen corresponding path program 1 times [2021-11-12 22:25:30,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:30,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936155847] [2021-11-12 22:25:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:30,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:30,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:30,523 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:30,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 22:25:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:34,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 1822 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 22:25:34,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-11-12 22:25:35,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-12 22:25:35,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:35,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936155847] [2021-11-12 22:25:35,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936155847] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:35,921 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:35,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-12 22:25:35,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939800544] [2021-11-12 22:25:35,921 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:35,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 22:25:35,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 22:25:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-12 22:25:35,923 INFO L87 Difference]: Start difference. First operand 252 states and 325 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-12 22:25:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:36,190 INFO L93 Difference]: Finished difference Result 376 states and 484 transitions. [2021-11-12 22:25:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 22:25:36,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 163 [2021-11-12 22:25:36,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:36,194 INFO L225 Difference]: With dead ends: 376 [2021-11-12 22:25:36,194 INFO L226 Difference]: Without dead ends: 254 [2021-11-12 22:25:36,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:25:36,196 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 82 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 195.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.01ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 227.63ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:36,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 752 Invalid, 74 Unknown, 0 Unchecked, 2.01ms Time], IncrementalHoareTripleChecker [30 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 227.63ms Time] [2021-11-12 22:25:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-11-12 22:25:36,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 248. [2021-11-12 22:25:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 163 states have (on average 1.1595092024539877) internal successors, (189), 165 states have internal predecessors, (189), 60 states have call successors, (60), 24 states have call predecessors, (60), 24 states have return successors, (70), 58 states have call predecessors, (70), 59 states have call successors, (70) [2021-11-12 22:25:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 319 transitions. [2021-11-12 22:25:36,217 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 319 transitions. Word has length 163 [2021-11-12 22:25:36,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:36,218 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 319 transitions. [2021-11-12 22:25:36,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2021-11-12 22:25:36,219 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 319 transitions. [2021-11-12 22:25:36,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-12 22:25:36,221 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:36,221 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:36,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:36,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:36,438 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:36,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:36,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1287253867, now seen corresponding path program 1 times [2021-11-12 22:25:36,442 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:36,443 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212874460] [2021-11-12 22:25:36,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:36,443 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:36,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:36,444 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:36,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 22:25:40,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:40,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1839 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 22:25:40,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:41,943 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2021-11-12 22:25:41,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-12 22:25:43,141 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:43,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212874460] [2021-11-12 22:25:43,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212874460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:43,142 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:43,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-12 22:25:43,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160773972] [2021-11-12 22:25:43,142 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:43,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-12 22:25:43,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:43,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-12 22:25:43,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-12 22:25:43,144 INFO L87 Difference]: Start difference. First operand 248 states and 319 transitions. Second operand has 13 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-12 22:25:45,349 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:47,363 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:49,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:49,727 INFO L93 Difference]: Finished difference Result 394 states and 514 transitions. [2021-11-12 22:25:49,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-12 22:25:49,728 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) Word has length 169 [2021-11-12 22:25:49,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:49,731 INFO L225 Difference]: With dead ends: 394 [2021-11-12 22:25:49,732 INFO L226 Difference]: Without dead ends: 246 [2021-11-12 22:25:49,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-12 22:25:49,734 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 17 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5627.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.76ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 46 IncrementalHoareTripleChecker+Unchecked, 5817.43ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:49,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 1451 Invalid, 166 Unknown, 0 Unchecked, 3.76ms Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 2 Unknown, 46 Unchecked, 5817.43ms Time] [2021-11-12 22:25:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-12 22:25:49,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 235. [2021-11-12 22:25:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 153 states have (on average 1.1633986928104576) internal successors, (178), 155 states have internal predecessors, (178), 59 states have call successors, (59), 22 states have call predecessors, (59), 22 states have return successors, (62), 57 states have call predecessors, (62), 58 states have call successors, (62) [2021-11-12 22:25:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 299 transitions. [2021-11-12 22:25:49,754 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 299 transitions. Word has length 169 [2021-11-12 22:25:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:49,755 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 299 transitions. [2021-11-12 22:25:49,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.090909090909092) internal successors, (89), 12 states have internal predecessors, (89), 4 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-12 22:25:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 299 transitions. [2021-11-12 22:25:49,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-12 22:25:49,757 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:49,757 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:49,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:49,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:49,962 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:49,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:49,963 INFO L85 PathProgramCache]: Analyzing trace with hash -883979431, now seen corresponding path program 1 times [2021-11-12 22:25:49,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:49,966 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110924298] [2021-11-12 22:25:49,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:49,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:49,967 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:49,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 22:25:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:25:54,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 22:25:54,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:25:55,303 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 32 treesize of output 24 [2021-11-12 22:25:55,311 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 21 treesize of output 13 [2021-11-12 22:25:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-12 22:25:55,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:25:55,882 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 22:25:55,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 22:25:55,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110924298] [2021-11-12 22:25:55,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110924298] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 22:25:55,883 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 22:25:55,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-11-12 22:25:55,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309535456] [2021-11-12 22:25:55,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 22:25:55,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 22:25:55,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 22:25:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 22:25:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-12 22:25:55,885 INFO L87 Difference]: Start difference. First operand 235 states and 299 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:25:58,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 22:25:59,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 22:25:59,470 INFO L93 Difference]: Finished difference Result 288 states and 353 transitions. [2021-11-12 22:25:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 22:25:59,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 174 [2021-11-12 22:25:59,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 22:25:59,474 INFO L225 Difference]: With dead ends: 288 [2021-11-12 22:25:59,474 INFO L226 Difference]: Without dead ends: 266 [2021-11-12 22:25:59,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 339 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-12 22:25:59,475 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 96 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3239.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.61ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 3414.40ms IncrementalHoareTripleChecker+Time [2021-11-12 22:25:59,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1135 Invalid, 173 Unknown, 0 Unchecked, 3.61ms Time], IncrementalHoareTripleChecker [14 Valid, 107 Invalid, 1 Unknown, 51 Unchecked, 3414.40ms Time] [2021-11-12 22:25:59,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-11-12 22:25:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 257. [2021-11-12 22:25:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 169 states have (on average 1.1420118343195267) internal successors, (193), 171 states have internal predecessors, (193), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (64), 59 states have call predecessors, (64), 60 states have call successors, (64) [2021-11-12 22:25:59,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 318 transitions. [2021-11-12 22:25:59,499 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 318 transitions. Word has length 174 [2021-11-12 22:25:59,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 22:25:59,500 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 318 transitions. [2021-11-12 22:25:59,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-12 22:25:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 318 transitions. [2021-11-12 22:25:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-12 22:25:59,503 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 22:25:59,503 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 22:25:59,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 22:25:59,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 22:25:59,718 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 22:25:59,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 22:25:59,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1887584236, now seen corresponding path program 1 times [2021-11-12 22:25:59,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 22:25:59,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218992144] [2021-11-12 22:25:59,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 22:25:59,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 22:25:59,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 22:25:59,723 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 22:25:59,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1416762a-5acb-405f-a026-81524b1814f9/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 22:26:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 22:26:23,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-12 22:26:23,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 22:26:25,977 INFO L354 Elim1Store]: treesize reduction 1099, result has 7.0 percent of original size [2021-11-12 22:26:25,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 95 [2021-11-12 22:26:30,641 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:26:30,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 130 treesize of output 66 [2021-11-12 22:26:32,250 INFO L354 Elim1Store]: treesize reduction 1099, result has 7.0 percent of original size [2021-11-12 22:26:32,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 70 treesize of output 95 [2021-11-12 22:26:37,984 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-12 22:26:37,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 448 treesize of output 384 [2021-11-12 22:26:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 123 proven. 10 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2021-11-12 22:26:39,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 22:26:50,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22212 treesize of output 21414 [2021-11-12 22:26:50,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21414 treesize of output 21400