./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:04:30,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:04:30,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:04:30,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:04:30,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:04:30,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:04:30,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:04:30,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:04:30,786 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:04:30,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:04:30,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:04:30,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:04:30,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:04:30,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:04:30,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:04:30,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:04:30,809 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:04:30,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:04:30,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:04:30,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:04:30,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:04:30,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:04:30,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:04:30,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:04:30,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:04:30,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:04:30,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:04:30,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:04:30,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:04:30,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:04:30,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:04:30,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:04:30,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:04:30,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:04:30,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:04:30,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:04:30,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:04:30,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:04:30,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:04:30,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:04:30,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:04:30,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 15:04:30,902 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:04:30,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:04:30,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:04:30,903 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:04:30,904 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:04:30,904 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:04:30,904 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:04:30,904 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:04:30,905 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:04:30,905 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:04:30,905 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:04:30,905 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:04:30,906 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:04:30,906 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:04:30,906 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:04:30,906 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:04:30,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:04:30,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:04:30,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:04:30,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:04:30,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:04:30,909 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:04:30,909 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:04:30,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:04:30,909 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:04:30,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:04:30,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:04:30,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:04:30,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:30,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:04:30,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:04:30,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:04:30,911 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:04:30,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:04:30,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:04:30,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:04:30,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:04:30,912 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_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be [2021-11-19 15:04:31,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:04:31,211 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:04:31,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:04:31,216 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:04:31,217 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:04:31,218 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-11-19 15:04:31,306 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data/0b0e35026/6dfc8c722ea540e98233ebed18b9c0d0/FLAGe3f190aef [2021-11-19 15:04:32,478 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:04:32,479 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-11-19 15:04:32,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data/0b0e35026/6dfc8c722ea540e98233ebed18b9c0d0/FLAGe3f190aef [2021-11-19 15:04:32,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data/0b0e35026/6dfc8c722ea540e98233ebed18b9c0d0 [2021-11-19 15:04:32,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:04:32,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:04:32,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:32,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:04:32,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:04:32,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:32" (1/1) ... [2021-11-19 15:04:32,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2894c598 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:32, skipping insertion in model container [2021-11-19 15:04:32,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:32" (1/1) ... [2021-11-19 15:04:32,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:04:32,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:33,387 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-11-19 15:04:33,402 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-11-19 15:04:33,443 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:04:33,454 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:04:34,918 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,919 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,920 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,921 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,922 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,942 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,946 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,947 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,950 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,951 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,953 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:34,954 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:35,523 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:04:35,525 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:04:35,527 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:04:35,528 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:04:35,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:04:35,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:04:35,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:04:35,579 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:04:35,581 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:04:35,582 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:04:35,978 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:04:36,394 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,394 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,422 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,428 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,429 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,445 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,453 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,454 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,455 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,462 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,462 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,463 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:36,505 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:36,550 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:04:36,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3a1e6257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:36, skipping insertion in model container [2021-11-19 15:04:36,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:36,552 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:04:36,555 INFO L158 Benchmark]: Toolchain (without parser) took 3794.11ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 58.3MB in the beginning and 48.2MB in the end (delta: 10.1MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2021-11-19 15:04:36,556 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:04:36,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3791.13ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 58.0MB in the beginning and 48.2MB in the end (delta: 9.8MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2021-11-19 15:04:36,561 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 86.0MB. Free memory was 65.0MB in the beginning and 64.9MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3791.13ms. Allocated memory was 86.0MB in the beginning and 113.2MB in the end (delta: 27.3MB). Free memory was 58.0MB in the beginning and 48.2MB in the end (delta: 9.8MB). Peak memory consumption was 34.8MB. 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_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:04:39,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:04:39,300 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:04:39,345 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:04:39,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:04:39,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:04:39,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:04:39,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:04:39,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:04:39,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:04:39,359 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:04:39,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:04:39,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:04:39,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:04:39,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:04:39,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:04:39,369 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:04:39,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:04:39,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:04:39,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:04:39,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:04:39,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:04:39,387 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:04:39,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:04:39,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:04:39,405 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:04:39,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:04:39,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:04:39,411 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:04:39,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:04:39,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:04:39,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:04:39,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:04:39,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:04:39,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:04:39,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:04:39,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:04:39,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:04:39,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:04:39,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:04:39,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:04:39,432 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 15:04:39,468 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:04:39,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:04:39,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:04:39,470 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:04:39,470 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:04:39,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:04:39,471 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:04:39,471 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:04:39,471 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:04:39,472 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:04:39,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:04:39,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:04:39,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:04:39,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:04:39,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:04:39,474 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:04:39,474 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:04:39,474 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:04:39,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:04:39,475 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:04:39,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:04:39,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:04:39,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:04:39,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:04:39,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:39,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:04:39,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:04:39,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:04:39,477 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:04:39,478 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:04:39,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:04:39,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:04:39,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:04:39,479 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_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be [2021-11-19 15:04:39,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:04:39,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:04:39,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:04:39,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:04:39,994 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:04:39,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-11-19 15:04:40,084 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data/42d4aab4e/728688f0b92c46938a80c73993f8a05f/FLAG30de94f03 [2021-11-19 15:04:41,300 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:04:41,301 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-11-19 15:04:41,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data/42d4aab4e/728688f0b92c46938a80c73993f8a05f/FLAG30de94f03 [2021-11-19 15:04:41,592 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/data/42d4aab4e/728688f0b92c46938a80c73993f8a05f [2021-11-19 15:04:41,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:04:41,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:04:41,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:41,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:04:41,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:04:41,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:41,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74942ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:41, skipping insertion in model container [2021-11-19 15:04:41,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:04:41" (1/1) ... [2021-11-19 15:04:41,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:04:41,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:42,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-11-19 15:04:42,160 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-11-19 15:04:42,196 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:04:42,209 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:04:44,004 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,004 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,005 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,006 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,032 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,033 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,037 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,040 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,044 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,046 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,050 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,051 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:44,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:04:44,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:04:44,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:04:44,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:04:44,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:04:44,737 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:04:44,738 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:04:44,739 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:04:44,740 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:04:44,741 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:04:45,030 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:04:45,509 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,510 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,547 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,548 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,559 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,560 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,590 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,591 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,592 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,592 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,593 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,593 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,594 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,655 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:45,722 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:04:45,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:04:45,830 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-11-19 15:04:45,831 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-11-19 15:04:45,832 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:04:45,833 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:04:45,922 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,923 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,923 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,924 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,925 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,938 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,938 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,944 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,944 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:45,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:04:45,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:04:45,990 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:04:45,992 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:04:45,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:04:45,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:04:45,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:04:45,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:04:45,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:04:45,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:04:46,022 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:04:46,170 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,171 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,182 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,188 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,193 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,216 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,218 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,219 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,219 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,220 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,220 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,221 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,253 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:46,287 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:04:46,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-11-19 15:04:46,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-11-19 15:04:46,324 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 15:04:46,326 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 15:04:46,375 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,377 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,378 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,379 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,380 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,416 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,417 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,418 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,419 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,421 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,422 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,423 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,467 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 15:04:46,470 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 15:04:46,471 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 15:04:46,472 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 15:04:46,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 15:04:46,473 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 15:04:46,474 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 15:04:46,475 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 15:04:46,476 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 15:04:46,477 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 15:04:46,508 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 15:04:46,669 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,669 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,684 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,685 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,690 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,691 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,703 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,704 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,704 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,705 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,706 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,706 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,707 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 15:04:46,740 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:04:47,377 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:04:47,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47 WrapperNode [2021-11-19 15:04:47,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:04:47,380 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:04:47,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:04:47,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:04:47,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,723 INFO L137 Inliner]: procedures = 797, calls = 2442, calls flagged for inlining = 70, calls inlined = 13, statements flattened = 613 [2021-11-19 15:04:47,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:04:47,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:04:47,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:04:47,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:04:47,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:04:47,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:04:47,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:04:47,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:04:47,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (1/1) ... [2021-11-19 15:04:47,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:04:47,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:04:47,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:04:47,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:04:47,995 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2021-11-19 15:04:47,996 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2021-11-19 15:04:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 15:04:48,007 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 15:04:48,007 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 15:04:48,007 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 15:04:48,007 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 15:04:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:04:48,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:04:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 15:04:48,008 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 15:04:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2021-11-19 15:04:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2021-11-19 15:04:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:04:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:04:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:04:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:04:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:04:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 15:04:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 15:04:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 15:04:48,010 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 15:04:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 15:04:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:04:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 15:04:48,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 15:04:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 15:04:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:04:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 15:04:48,013 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 15:04:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-11-19 15:04:48,013 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-11-19 15:04:48,013 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 15:04:48,014 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 15:04:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:04:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:04:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 15:04:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 15:04:48,015 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 15:04:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:04:48,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-19 15:04:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:04:48,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 15:04:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 15:04:48,016 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 15:04:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 15:04:48,016 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 15:04:48,016 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 15:04:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 15:04:48,017 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 15:04:48,017 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 15:04:48,018 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 15:04:48,018 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 15:04:48,541 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:04:48,543 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:04:52,951 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:04:52,970 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:04:52,971 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-19 15:04:52,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:52 BoogieIcfgContainer [2021-11-19 15:04:52,974 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:04:52,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:04:52,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:04:52,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:04:52,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:04:41" (1/3) ... [2021-11-19 15:04:52,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa93f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:04:52, skipping insertion in model container [2021-11-19 15:04:52,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:04:47" (2/3) ... [2021-11-19 15:04:52,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa93f62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:04:52, skipping insertion in model container [2021-11-19 15:04:52,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:04:52" (3/3) ... [2021-11-19 15:04:52,990 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness.i [2021-11-19 15:04:52,997 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:04:52,997 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 15:04:53,100 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:04:53,109 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:04:53,109 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 15:04:53,141 INFO L276 IsEmpty]: Start isEmpty. Operand has 168 states, 107 states have (on average 1.205607476635514) internal successors, (129), 108 states have internal predecessors, (129), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-11-19 15:04:53,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 15:04:53,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:53,170 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] [2021-11-19 15:04:53,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:53,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash 156519303, now seen corresponding path program 1 times [2021-11-19 15:04:53,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:53,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890063187] [2021-11-19 15:04:53,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:53,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:53,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:53,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:53,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:04:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:54,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:04:54,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-19 15:04:55,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:55,516 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-19 15:04:55,517 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:55,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890063187] [2021-11-19 15:04:55,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890063187] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:04:55,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:04:55,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 15:04:55,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559291822] [2021-11-19 15:04:55,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:55,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:04:55,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:55,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:04:55,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:04:55,596 INFO L87 Difference]: Start difference. First operand has 168 states, 107 states have (on average 1.205607476635514) internal successors, (129), 108 states have internal predecessors, (129), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 15:04:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:55,653 INFO L93 Difference]: Finished difference Result 331 states and 435 transitions. [2021-11-19 15:04:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:04:55,659 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 139 [2021-11-19 15:04:55,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:55,676 INFO L225 Difference]: With dead ends: 331 [2021-11-19 15:04:55,676 INFO L226 Difference]: Without dead ends: 161 [2021-11-19 15:04:55,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:04:55,693 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:55,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:04:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-11-19 15:04:55,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2021-11-19 15:04:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-19 15:04:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2021-11-19 15:04:55,826 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 139 [2021-11-19 15:04:55,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:55,833 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2021-11-19 15:04:55,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 15:04:55,835 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2021-11-19 15:04:55,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-19 15:04:55,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:55,846 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] [2021-11-19 15:04:55,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:56,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:56,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:56,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:56,065 INFO L85 PathProgramCache]: Analyzing trace with hash -318631745, now seen corresponding path program 1 times [2021-11-19 15:04:56,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:56,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1940892382] [2021-11-19 15:04:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:56,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:56,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:56,088 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:56,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:04:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:57,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:04:57,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:04:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-19 15:04:57,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:04:58,375 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-11-19 15:04:58,376 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:04:58,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1940892382] [2021-11-19 15:04:58,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1940892382] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:04:58,377 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:04:58,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-19 15:04:58,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354628363] [2021-11-19 15:04:58,378 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:04:58,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:04:58,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:04:58,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:04:58,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:04:58,382 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 15:04:58,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:04:58,493 INFO L93 Difference]: Finished difference Result 286 states and 354 transitions. [2021-11-19 15:04:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:04:58,500 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 139 [2021-11-19 15:04:58,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:04:58,508 INFO L225 Difference]: With dead ends: 286 [2021-11-19 15:04:58,508 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 15:04:58,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:04:58,515 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 2 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:04:58,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 784 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:04:58,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 15:04:58,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-19 15:04:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 105 states have internal predecessors, (121), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2021-11-19 15:04:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2021-11-19 15:04:58,546 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 139 [2021-11-19 15:04:58,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:04:58,551 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2021-11-19 15:04:58,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 15:04:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2021-11-19 15:04:58,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-19 15:04:58,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:04:58,562 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] [2021-11-19 15:04:58,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 15:04:58,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:04:58,787 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:04:58,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:04:58,788 INFO L85 PathProgramCache]: Analyzing trace with hash -18073417, now seen corresponding path program 1 times [2021-11-19 15:04:58,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:04:58,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180011270] [2021-11-19 15:04:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:04:58,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:04:58,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:04:58,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:04:58,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:04:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:04:59,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:04:59,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-11-19 15:05:00,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:00,967 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-19 15:05:00,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:00,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180011270] [2021-11-19 15:05:00,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180011270] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:00,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:00,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 15:05:00,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71245213] [2021-11-19 15:05:00,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:00,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:05:00,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:00,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:05:00,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:05:00,971 INFO L87 Difference]: Start difference. First operand 165 states and 203 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 15:05:01,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:01,254 INFO L93 Difference]: Finished difference Result 286 states and 353 transitions. [2021-11-19 15:05:01,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 15:05:01,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 145 [2021-11-19 15:05:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:01,258 INFO L225 Difference]: With dead ends: 286 [2021-11-19 15:05:01,258 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 15:05:01,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:05:01,260 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 2 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:01,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 904 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:05:01,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 15:05:01,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2021-11-19 15:05:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.1485148514851484) internal successors, (116), 102 states have internal predecessors, (116), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-19 15:05:01,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 197 transitions. [2021-11-19 15:05:01,294 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 197 transitions. Word has length 145 [2021-11-19 15:05:01,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:01,295 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 197 transitions. [2021-11-19 15:05:01,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-19 15:05:01,296 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 197 transitions. [2021-11-19 15:05:01,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 15:05:01,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:01,307 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] [2021-11-19 15:05:01,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:01,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:01,508 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:01,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:01,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2138847562, now seen corresponding path program 1 times [2021-11-19 15:05:01,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:01,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799621110] [2021-11-19 15:05:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:01,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:01,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:01,516 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:01,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:05:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:02,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1419 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:05:02,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:03,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 15:05:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 15:05:04,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:05,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-19 15:05:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-19 15:05:05,692 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:05,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799621110] [2021-11-19 15:05:05,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799621110] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:05,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:05,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-19 15:05:05,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863989317] [2021-11-19 15:05:05,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:05,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:05:05,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:05,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:05:05,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 15:05:05,695 INFO L87 Difference]: Start difference. First operand 161 states and 197 transitions. Second operand has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 9 states have internal predecessors, (74), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:05:06,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:06,413 INFO L93 Difference]: Finished difference Result 276 states and 340 transitions. [2021-11-19 15:05:06,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 15:05:06,414 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 9 states have internal predecessors, (74), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 150 [2021-11-19 15:05:06,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:06,417 INFO L225 Difference]: With dead ends: 276 [2021-11-19 15:05:06,418 INFO L226 Difference]: Without dead ends: 165 [2021-11-19 15:05:06,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-19 15:05:06,420 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 24 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:06,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 882 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 34 Unchecked, 0.6s Time] [2021-11-19 15:05:06,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-19 15:05:06,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-11-19 15:05:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.1523809523809523) internal successors, (121), 105 states have internal predecessors, (121), 41 states have call successors, (41), 19 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-19 15:05:06,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 202 transitions. [2021-11-19 15:05:06,441 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 202 transitions. Word has length 150 [2021-11-19 15:05:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:06,442 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 202 transitions. [2021-11-19 15:05:06,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 9 states have internal predecessors, (74), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-19 15:05:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 202 transitions. [2021-11-19 15:05:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 15:05:06,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:06,447 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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] [2021-11-19 15:05:06,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:06,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:06,663 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:06,664 INFO L85 PathProgramCache]: Analyzing trace with hash -589361784, now seen corresponding path program 1 times [2021-11-19 15:05:06,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:06,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465960069] [2021-11-19 15:05:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:06,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:06,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:06,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:06,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:05:07,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:07,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:05:07,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:08,357 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 15:05:08,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:09,032 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-19 15:05:09,033 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:09,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465960069] [2021-11-19 15:05:09,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465960069] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:09,033 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:09,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 15:05:09,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182390314] [2021-11-19 15:05:09,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:09,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:05:09,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:09,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:05:09,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:05:09,036 INFO L87 Difference]: Start difference. First operand 165 states and 202 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:05:09,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:09,174 INFO L93 Difference]: Finished difference Result 280 states and 348 transitions. [2021-11-19 15:05:09,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:05:09,177 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 150 [2021-11-19 15:05:09,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:09,182 INFO L225 Difference]: With dead ends: 280 [2021-11-19 15:05:09,182 INFO L226 Difference]: Without dead ends: 172 [2021-11-19 15:05:09,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:05:09,184 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 27 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:09,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 539 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:05:09,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-19 15:05:09,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-11-19 15:05:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 42 states have call successors, (42), 19 states have call predecessors, (42), 19 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2021-11-19 15:05:09,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 212 transitions. [2021-11-19 15:05:09,205 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 212 transitions. Word has length 150 [2021-11-19 15:05:09,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:09,206 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 212 transitions. [2021-11-19 15:05:09,207 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, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-19 15:05:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 212 transitions. [2021-11-19 15:05:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-19 15:05:09,210 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:09,211 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:05:09,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:09,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:09,427 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:09,427 INFO L85 PathProgramCache]: Analyzing trace with hash 2070509270, now seen corresponding path program 1 times [2021-11-19 15:05:09,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:09,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170537179] [2021-11-19 15:05:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:09,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:09,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:09,430 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:09,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:05:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:10,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 1433 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 15:05:10,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:10,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-19 15:05:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 15:05:12,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:13,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-19 15:05:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-19 15:05:13,958 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:13,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170537179] [2021-11-19 15:05:13,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170537179] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:13,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:13,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-19 15:05:13,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102148808] [2021-11-19 15:05:13,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:13,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 15:05:13,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:13,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 15:05:13,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 15:05:13,962 INFO L87 Difference]: Start difference. First operand 172 states and 212 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-19 15:05:16,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:05:17,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:17,307 INFO L93 Difference]: Finished difference Result 306 states and 378 transitions. [2021-11-19 15:05:17,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 15:05:17,308 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) Word has length 156 [2021-11-19 15:05:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:17,311 INFO L225 Difference]: With dead ends: 306 [2021-11-19 15:05:17,311 INFO L226 Difference]: Without dead ends: 175 [2021-11-19 15:05:17,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:05:17,313 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 37 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1070 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:17,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1070 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 71 Invalid, 1 Unknown, 83 Unchecked, 3.2s Time] [2021-11-19 15:05:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-19 15:05:17,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-19 15:05:17,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 112 states have (on average 1.1428571428571428) internal successors, (128), 113 states have internal predecessors, (128), 43 states have call successors, (43), 20 states have call predecessors, (43), 19 states have return successors, (44), 41 states have call predecessors, (44), 42 states have call successors, (44) [2021-11-19 15:05:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 215 transitions. [2021-11-19 15:05:17,334 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 215 transitions. Word has length 156 [2021-11-19 15:05:17,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:17,335 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 215 transitions. [2021-11-19 15:05:17,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 10 states have internal predecessors, (78), 5 states have call successors, (28), 3 states have call predecessors, (28), 5 states have return successors, (24), 5 states have call predecessors, (24), 5 states have call successors, (24) [2021-11-19 15:05:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 215 transitions. [2021-11-19 15:05:17,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-19 15:05:17,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:17,340 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] [2021-11-19 15:05:17,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:17,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:17,555 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:17,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1464465370, now seen corresponding path program 1 times [2021-11-19 15:05:17,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:17,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784874838] [2021-11-19 15:05:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:17,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:17,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:17,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:17,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 15:05:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:18,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 15:05:18,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2021-11-19 15:05:19,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:20,017 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-11-19 15:05:20,018 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:20,018 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784874838] [2021-11-19 15:05:20,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784874838] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:05:20,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:05:20,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 15:05:20,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162554601] [2021-11-19 15:05:20,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:20,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:05:20,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:05:20,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:05:20,023 INFO L87 Difference]: Start difference. First operand 175 states and 215 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 15:05:20,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:20,289 INFO L93 Difference]: Finished difference Result 271 states and 333 transitions. [2021-11-19 15:05:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 15:05:20,291 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 161 [2021-11-19 15:05:20,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:20,294 INFO L225 Difference]: With dead ends: 271 [2021-11-19 15:05:20,294 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 15:05:20,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 15:05:20,296 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 2 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:20,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1082 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:05:20,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 15:05:20,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-19 15:05:20,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 119 states have internal predecessors, (132), 43 states have call successors, (43), 20 states have call predecessors, (43), 21 states have return successors, (47), 41 states have call predecessors, (47), 42 states have call successors, (47) [2021-11-19 15:05:20,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 222 transitions. [2021-11-19 15:05:20,317 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 222 transitions. Word has length 161 [2021-11-19 15:05:20,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:20,319 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 222 transitions. [2021-11-19 15:05:20,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 15:05:20,319 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 222 transitions. [2021-11-19 15:05:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-19 15:05:20,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:20,323 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] [2021-11-19 15:05:20,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:20,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:20,547 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:20,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:20,548 INFO L85 PathProgramCache]: Analyzing trace with hash 954368422, now seen corresponding path program 1 times [2021-11-19 15:05:20,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:20,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397538432] [2021-11-19 15:05:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:20,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:20,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:20,551 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:20,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:05:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:21,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 15:05:21,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-11-19 15:05:23,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:24,546 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-19 15:05:24,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:24,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397538432] [2021-11-19 15:05:24,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397538432] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:24,548 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:24,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 13 [2021-11-19 15:05:24,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875183110] [2021-11-19 15:05:24,548 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:24,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 15:05:24,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:24,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 15:05:24,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:05:24,552 INFO L87 Difference]: Start difference. First operand 181 states and 222 transitions. Second operand has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-19 15:05:26,684 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:05:28,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:05:30,698 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:05:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:33,579 INFO L93 Difference]: Finished difference Result 283 states and 350 transitions. [2021-11-19 15:05:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 15:05:33,582 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) Word has length 167 [2021-11-19 15:05:33,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:33,586 INFO L225 Difference]: With dead ends: 283 [2021-11-19 15:05:33,586 INFO L226 Difference]: Without dead ends: 183 [2021-11-19 15:05:33,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-11-19 15:05:33,588 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 18 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:33,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 1606 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 91 Invalid, 3 Unknown, 99 Unchecked, 8.4s Time] [2021-11-19 15:05:33,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-19 15:05:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 178. [2021-11-19 15:05:33,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 114 states have (on average 1.131578947368421) internal successors, (129), 117 states have internal predecessors, (129), 42 states have call successors, (42), 19 states have call predecessors, (42), 21 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-19 15:05:33,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 217 transitions. [2021-11-19 15:05:33,607 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 217 transitions. Word has length 167 [2021-11-19 15:05:33,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:33,608 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 217 transitions. [2021-11-19 15:05:33,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.818181818181818) internal successors, (86), 12 states have internal predecessors, (86), 4 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (29), 2 states have call predecessors, (29), 4 states have call successors, (29) [2021-11-19 15:05:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 217 transitions. [2021-11-19 15:05:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 15:05:33,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:33,612 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] [2021-11-19 15:05:33,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:33,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:33,827 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:33,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2033193032, now seen corresponding path program 1 times [2021-11-19 15:05:33,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:33,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784921574] [2021-11-19 15:05:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:33,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:33,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:33,843 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:33,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:05:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:35,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 15:05:35,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:35,446 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-19 15:05:35,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-19 15:05:35,887 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:35,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784921574] [2021-11-19 15:05:35,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784921574] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:35,887 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:35,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:05:35,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469970897] [2021-11-19 15:05:35,888 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:35,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:05:35,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:05:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:05:35,890 INFO L87 Difference]: Start difference. First operand 178 states and 217 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:05:35,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:35,911 INFO L93 Difference]: Finished difference Result 256 states and 307 transitions. [2021-11-19 15:05:35,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:05:35,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2021-11-19 15:05:35,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:35,916 INFO L225 Difference]: With dead ends: 256 [2021-11-19 15:05:35,916 INFO L226 Difference]: Without dead ends: 179 [2021-11-19 15:05:35,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:05:35,917 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:35,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 386 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:05:35,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-11-19 15:05:35,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-11-19 15:05:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 115 states have (on average 1.1304347826086956) internal successors, (130), 118 states have internal predecessors, (130), 42 states have call successors, (42), 19 states have call predecessors, (42), 21 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-19 15:05:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 218 transitions. [2021-11-19 15:05:35,935 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 218 transitions. Word has length 172 [2021-11-19 15:05:35,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:35,936 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 218 transitions. [2021-11-19 15:05:35,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-19 15:05:35,936 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 218 transitions. [2021-11-19 15:05:35,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 15:05:35,940 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:35,940 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] [2021-11-19 15:05:35,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:36,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:36,157 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:36,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:36,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1012124678, now seen corresponding path program 1 times [2021-11-19 15:05:36,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:36,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323371696] [2021-11-19 15:05:36,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:36,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:36,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:36,160 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:36,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:05:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:37,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1484 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:05:37,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:37,761 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-19 15:05:37,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-19 15:05:38,224 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:38,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323371696] [2021-11-19 15:05:38,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323371696] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:38,225 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:38,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-19 15:05:38,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510288202] [2021-11-19 15:05:38,226 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:38,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 15:05:38,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 15:05:38,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:05:38,232 INFO L87 Difference]: Start difference. First operand 179 states and 218 transitions. Second operand has 10 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 15:05:38,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:38,499 INFO L93 Difference]: Finished difference Result 185 states and 223 transitions. [2021-11-19 15:05:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 15:05:38,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 172 [2021-11-19 15:05:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:38,503 INFO L225 Difference]: With dead ends: 185 [2021-11-19 15:05:38,503 INFO L226 Difference]: Without dead ends: 183 [2021-11-19 15:05:38,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 15:05:38,505 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 26 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:38,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 1666 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:05:38,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-19 15:05:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-19 15:05:38,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 118 states have (on average 1.1271186440677967) internal successors, (133), 121 states have internal predecessors, (133), 42 states have call successors, (42), 20 states have call predecessors, (42), 22 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-19 15:05:38,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 221 transitions. [2021-11-19 15:05:38,523 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 221 transitions. Word has length 172 [2021-11-19 15:05:38,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:38,524 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 221 transitions. [2021-11-19 15:05:38,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-19 15:05:38,525 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 221 transitions. [2021-11-19 15:05:38,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-19 15:05:38,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:38,528 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, 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] [2021-11-19 15:05:38,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:38,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:38,755 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:38,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:38,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1671447156, now seen corresponding path program 1 times [2021-11-19 15:05:38,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:38,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368543672] [2021-11-19 15:05:38,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:38,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:38,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:38,759 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:38,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 15:05:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:05:39,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:05:39,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:05:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-19 15:05:41,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:05:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-19 15:05:49,970 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:05:49,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368543672] [2021-11-19 15:05:49,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [368543672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:05:49,971 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:05:49,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-19 15:05:49,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424684209] [2021-11-19 15:05:49,971 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:05:49,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 15:05:49,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:05:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 15:05:49,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=199, Unknown=4, NotChecked=0, Total=240 [2021-11-19 15:05:49,973 INFO L87 Difference]: Start difference. First operand 183 states and 221 transitions. Second operand has 16 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (35), 7 states have call predecessors, (35), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-19 15:05:50,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:05:50,181 INFO L93 Difference]: Finished difference Result 189 states and 226 transitions. [2021-11-19 15:05:50,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 15:05:50,182 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (35), 7 states have call predecessors, (35), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 178 [2021-11-19 15:05:50,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:05:50,185 INFO L225 Difference]: With dead ends: 189 [2021-11-19 15:05:50,185 INFO L226 Difference]: Without dead ends: 187 [2021-11-19 15:05:50,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 340 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=43, Invalid=225, Unknown=4, NotChecked=0, Total=272 [2021-11-19 15:05:50,187 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 9 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:05:50,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1911 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 14 Unchecked, 0.1s Time] [2021-11-19 15:05:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-19 15:05:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-19 15:05:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 124 states have internal predecessors, (136), 42 states have call successors, (42), 21 states have call predecessors, (42), 23 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-19 15:05:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 224 transitions. [2021-11-19 15:05:50,211 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 224 transitions. Word has length 178 [2021-11-19 15:05:50,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:05:50,213 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 224 transitions. [2021-11-19 15:05:50,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 6.416666666666667) internal successors, (77), 10 states have internal predecessors, (77), 7 states have call successors, (35), 7 states have call predecessors, (35), 1 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-19 15:05:50,214 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 224 transitions. [2021-11-19 15:05:50,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-19 15:05:50,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:05:50,219 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:05:50,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:05:50,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:05:50,435 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:05:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:05:50,435 INFO L85 PathProgramCache]: Analyzing trace with hash -654909197, now seen corresponding path program 1 times [2021-11-19 15:05:50,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:05:50,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002977769] [2021-11-19 15:05:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:05:50,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:05:50,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:05:50,439 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:05:50,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ca43f91-e40f-4d45-8e78-04289edb0364/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:06:11,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:06:11,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1533 conjuncts, 72 conjunts are in the unsatisfiable core [2021-11-19 15:06:11,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:06:11,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-11-19 15:06:12,624 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-19 15:06:12,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-19 15:06:12,783 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 15:06:12,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 36 treesize of output 32 [2021-11-19 15:06:22,599 INFO L354 Elim1Store]: treesize reduction 108, result has 16.9 percent of original size [2021-11-19 15:06:22,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 62 treesize of output 68 [2021-11-19 15:06:25,251 INFO L354 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2021-11-19 15:06:25,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 81 [2021-11-19 15:06:25,943 INFO L354 Elim1Store]: treesize reduction 60, result has 48.7 percent of original size [2021-11-19 15:06:25,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 73 treesize of output 120 [2021-11-19 15:06:29,016 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 150 treesize of output 146 [2021-11-19 15:06:29,272 INFO L354 Elim1Store]: treesize reduction 144, result has 23.8 percent of original size [2021-11-19 15:06:29,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 159 treesize of output 188 [2021-11-19 15:13:18,804 WARN L227 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 239 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 15:14:58,231 WARN L227 SmtUtils]: Spent 6.56s on a formula simplification that was a NOOP. DAG size: 285 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 15:15:42,950 INFO L354 Elim1Store]: treesize reduction 118, result has 44.6 percent of original size [2021-11-19 15:15:42,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 568 treesize of output 557