./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_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_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/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_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/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_39d897b3-6a21-4eed-bb5d-6b18160e5247/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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:46,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:46,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:46,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:46,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:46,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:46,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:46,594 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:46,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:46,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:46,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:46,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:46,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:46,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:46,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:46,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:46,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:46,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:46,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:46,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:46,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:46,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:46,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:46,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:46,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:46,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:46,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:46,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:46,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:46,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:46,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:46,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:46,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:46,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:46,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:46,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:46,664 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:46,665 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:46,665 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:46,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:46,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:46,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:40:46,720 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:46,724 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:46,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:46,726 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:46,727 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:46,727 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:46,727 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:46,728 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:40:46,728 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:46,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:46,729 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:40:46,730 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:40:46,730 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:46,730 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:40:46,731 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:40:46,731 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:40:46,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:46,732 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:40:46,732 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:46,733 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:46,733 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:46,733 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:46,733 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:46,734 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:46,734 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:46,734 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:46,735 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:46,735 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:46,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:46,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:46,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:46,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:46,738 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:40:46,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:40:46,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:46,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:46,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:46,740 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-11-19 13:40:47,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:47,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:47,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:47,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:47,134 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:47,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-11-19 13:40:47,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data/000329a08/3817d1341f234b978b50c1e86d6b11b8/FLAGe50808d24 [2021-11-19 13:40:48,516 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:48,516 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-11-19 13:40:48,575 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data/000329a08/3817d1341f234b978b50c1e86d6b11b8/FLAGe50808d24 [2021-11-19 13:40:48,745 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data/000329a08/3817d1341f234b978b50c1e86d6b11b8 [2021-11-19 13:40:48,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:48,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:48,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:48,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:48,761 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:48,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:48" (1/1) ... [2021-11-19 13:40:48,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1174586d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:48, skipping insertion in model container [2021-11-19 13:40:48,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:48" (1/1) ... [2021-11-19 13:40:48,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:48,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:49,479 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-11-19 13:40:49,489 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-11-19 13:40:49,528 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:40:49,537 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:40:50,965 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,966 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,967 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,968 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,970 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,990 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,992 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,995 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,996 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:50,999 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:51,001 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:51,002 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:51,003 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:51,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:40:51,751 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:40:51,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:40:51,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:40:51,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:40:51,758 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:40:51,760 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:40:51,761 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:40:51,762 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:40:51,763 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:40:52,085 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:40:52,628 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,631 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,673 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,676 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,687 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,687 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,718 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,731 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,731 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,732 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,732 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,733 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,734 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:52,821 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:40:52,886 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 13:40:52,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5fcf088d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:52, skipping insertion in model container [2021-11-19 13:40:52,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:52,888 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:40:52,890 INFO L158 Benchmark]: Toolchain (without parser) took 4134.49ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 60.3MB in the beginning and 55.0MB in the end (delta: 5.2MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-11-19 13:40:52,891 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory was 67.2MB in the beginning and 67.2MB in the end (delta: 24.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:40:52,893 INFO L158 Benchmark]: CACSL2BoogieTranslator took 4130.62ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 59.9MB in the beginning and 55.0MB in the end (delta: 4.9MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-11-19 13:40:52,895 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 88.1MB. Free memory was 67.2MB in the beginning and 67.2MB in the end (delta: 24.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 4130.62ms. Allocated memory was 88.1MB in the beginning and 119.5MB in the end (delta: 31.5MB). Free memory was 59.9MB in the beginning and 55.0MB in the end (delta: 4.9MB). Peak memory consumption was 36.3MB. 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/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_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/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_39d897b3-6a21-4eed-bb5d-6b18160e5247/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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:40:55,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:40:55,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:40:55,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:40:55,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:40:55,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:40:55,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:40:55,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:40:55,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:40:55,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:40:55,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:40:55,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:40:55,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:40:55,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:40:55,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:40:55,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:40:55,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:40:55,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:40:55,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:40:55,431 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:40:55,433 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:40:55,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:40:55,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:40:55,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:40:55,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:40:55,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:40:55,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:40:55,452 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:40:55,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:40:55,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:40:55,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:40:55,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:40:55,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:40:55,458 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:40:55,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:40:55,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:40:55,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:40:55,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:40:55,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:40:55,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:40:55,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:40:55,470 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:40:55,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:40:55,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:40:55,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:40:55,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:40:55,515 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:40:55,515 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:40:55,515 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:40:55,515 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:40:55,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:40:55,516 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:40:55,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:40:55,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:40:55,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:40:55,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:40:55,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:40:55,519 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:40:55,520 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:40:55,520 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:40:55,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:40:55,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:40:55,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:40:55,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:40:55,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:40:55,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:40:55,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:40:55,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:40:55,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:40:55,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:40:55,522 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:40:55,523 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:40:55,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:40:55,523 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:40:55,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:40:55,524 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-11-19 13:40:55,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:40:55,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:40:55,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:40:55,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:40:55,997 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:40:55,998 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-11-19 13:40:56,075 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data/d04e3bb56/2f16d275b3a14f3092c2ca7897063d19/FLAG8b5fa4632 [2021-11-19 13:40:57,187 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:40:57,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-11-19 13:40:57,253 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data/d04e3bb56/2f16d275b3a14f3092c2ca7897063d19/FLAG8b5fa4632 [2021-11-19 13:40:57,531 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/data/d04e3bb56/2f16d275b3a14f3092c2ca7897063d19 [2021-11-19 13:40:57,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:40:57,536 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:40:57,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:40:57,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:40:57,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:40:57,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:57" (1/1) ... [2021-11-19 13:40:57,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4966483a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:40:57, skipping insertion in model container [2021-11-19 13:40:57,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:40:57" (1/1) ... [2021-11-19 13:40:57,557 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:40:57,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:40:58,191 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-11-19 13:40:58,202 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-11-19 13:40:58,238 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:40:58,244 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:40:59,475 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,476 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,477 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,478 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,480 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,500 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,501 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,504 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,505 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,508 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,509 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,511 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:40:59,511 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:00,185 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:41:00,186 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:41:00,195 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:41:00,196 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:41:00,198 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:41:00,199 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:41:00,200 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:41:00,200 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:41:00,201 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:41:00,202 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:41:00,512 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:41:01,101 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,102 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,146 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,147 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,163 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,164 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,201 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,212 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,213 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,213 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,214 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,215 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,216 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,286 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:01,359 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:41:01,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:41:01,455 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-11-19 13:41:01,456 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-11-19 13:41:01,458 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:41:01,459 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:41:01,530 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,532 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,532 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,544 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,545 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,546 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,547 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,548 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,550 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,551 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,551 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,604 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:41:01,606 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:41:01,607 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:41:01,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:41:01,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:41:01,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:41:01,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:41:01,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:41:01,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:41:01,614 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:41:01,656 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:41:01,855 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,856 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,866 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,868 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,872 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,873 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,890 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,891 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,892 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,893 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,893 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,894 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,895 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:01,925 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:01,974 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:41:02,005 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-11-19 13:41:02,006 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_39d897b3-6a21-4eed-bb5d-6b18160e5247/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-11-19 13:41:02,008 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:41:02,010 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:41:02,091 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,092 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,093 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,093 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,095 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,102 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,103 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,104 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,104 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,108 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,109 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,110 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,110 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,149 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:41:02,152 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:41:02,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:41:02,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:41:02,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:41:02,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:41:02,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:41:02,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:41:02,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:41:02,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:41:02,188 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:41:02,343 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,343 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,361 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,362 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,367 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,368 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,380 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,381 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,382 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,384 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,384 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:41:02,420 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:41:03,149 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:41:03,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03 WrapperNode [2021-11-19 13:41:03,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:41:03,152 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:41:03,152 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:41:03,153 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:41:03,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,480 INFO L137 Inliner]: procedures = 796, calls = 2457, calls flagged for inlining = 70, calls inlined = 17, statements flattened = 928 [2021-11-19 13:41:03,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:41:03,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:41:03,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:41:03,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:41:03,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:41:03,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:41:03,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:41:03,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:41:03,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (1/1) ... [2021-11-19 13:41:03,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:41:03,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:41:03,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:41:03,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:41:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 13:41:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2021-11-19 13:41:03,784 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2021-11-19 13:41:03,784 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 13:41:03,785 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 13:41:03,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:41:03,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:41:03,785 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 13:41:03,786 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 13:41:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:41:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:41:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:41:03,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:41:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:41:03,787 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:41:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:41:03,787 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 13:41:03,787 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 13:41:03,787 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 13:41:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:41:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 13:41:03,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 13:41:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 13:41:03,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:41:03,789 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 13:41:03,789 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 13:41:03,789 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-19 13:41:03,789 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-19 13:41:03,789 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 13:41:03,790 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 13:41:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-19 13:41:03,790 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-19 13:41:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-19 13:41:03,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-19 13:41:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:41:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:41:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:41:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_get_entry_count [2021-11-19 13:41:03,791 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_get_entry_count [2021-11-19 13:41:03,791 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 13:41:03,792 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 13:41:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-19 13:41:03,792 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-19 13:41:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-19 13:41:03,792 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-19 13:41:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:41:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:41:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-19 13:41:03,793 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-19 13:41:03,793 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:41:03,793 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:41:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:41:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:41:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 13:41:03,794 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 13:41:03,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:41:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2021-11-19 13:41:03,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2021-11-19 13:41:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 13:41:03,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 13:41:03,795 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 13:41:03,796 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 13:41:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2021-11-19 13:41:03,796 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2021-11-19 13:41:04,360 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:41:04,363 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:41:04,590 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-19 13:41:04,911 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-19 13:41:09,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##39: assume !true; [2021-11-19 13:41:09,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume !true; [2021-11-19 13:41:09,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-19 13:41:09,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume !true; [2021-11-19 13:41:09,276 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##51: assume !true; [2021-11-19 13:41:09,305 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:41:09,317 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:41:09,318 INFO L301 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-19 13:41:09,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:41:09 BoogieIcfgContainer [2021-11-19 13:41:09,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:41:09,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:41:09,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:41:09,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:41:09,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:40:57" (1/3) ... [2021-11-19 13:41:09,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3b1c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:41:09, skipping insertion in model container [2021-11-19 13:41:09,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:41:03" (2/3) ... [2021-11-19 13:41:09,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e3b1c59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:41:09, skipping insertion in model container [2021-11-19 13:41:09,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:41:09" (3/3) ... [2021-11-19 13:41:09,331 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2021-11-19 13:41:09,338 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:41:09,338 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:41:09,401 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:41:09,408 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 13:41:09,409 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:41:09,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 276 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 166 states have internal predecessors, (211), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2021-11-19 13:41:09,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-19 13:41:09,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:09,462 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:41:09,463 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:09,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:09,470 INFO L85 PathProgramCache]: Analyzing trace with hash 448295814, now seen corresponding path program 1 times [2021-11-19 13:41:09,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:09,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808147691] [2021-11-19 13:41:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:09,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:09,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:09,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:09,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:41:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:10,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:41:10,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 503 trivial. 0 not checked. [2021-11-19 13:41:11,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2021-11-19 13:41:12,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:12,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808147691] [2021-11-19 13:41:12,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808147691] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:41:12,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:41:12,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 13:41:12,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389618493] [2021-11-19 13:41:12,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:12,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:41:12,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:12,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:41:12,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:41:12,814 INFO L87 Difference]: Start difference. First operand has 276 states, 172 states have (on average 1.2267441860465116) internal successors, (211), 166 states have internal predecessors, (211), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 13:41:12,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:12,939 INFO L93 Difference]: Finished difference Result 548 states and 807 transitions. [2021-11-19 13:41:12,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:41:12,941 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 281 [2021-11-19 13:41:12,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:12,961 INFO L225 Difference]: With dead ends: 548 [2021-11-19 13:41:12,961 INFO L226 Difference]: Without dead ends: 270 [2021-11-19 13:41:12,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 560 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 13:41:12,977 INFO L933 BasicCegarLoop]: 370 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, 370 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 13:41:12,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:41:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-19 13:41:13,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 270. [2021-11-19 13:41:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 160 states have (on average 1.2125) internal successors, (194), 161 states have internal predecessors, (194), 86 states have call successors, (86), 23 states have call predecessors, (86), 23 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2021-11-19 13:41:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 365 transitions. [2021-11-19 13:41:13,077 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 365 transitions. Word has length 281 [2021-11-19 13:41:13,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:13,078 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 365 transitions. [2021-11-19 13:41:13,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-19 13:41:13,079 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 365 transitions. [2021-11-19 13:41:13,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-11-19 13:41:13,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:13,087 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:41:13,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 13:41:13,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:13,302 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:13,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1090035532, now seen corresponding path program 1 times [2021-11-19 13:41:13,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:13,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115698714] [2021-11-19 13:41:13,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:13,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:13,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:13,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:13,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:41:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:14,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1849 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:41:14,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked. [2021-11-19 13:41:15,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2021-11-19 13:41:16,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:16,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115698714] [2021-11-19 13:41:16,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115698714] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:41:16,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:41:16,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 13:41:16,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063777881] [2021-11-19 13:41:16,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:16,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:41:16,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:41:16,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:41:16,979 INFO L87 Difference]: Start difference. First operand 270 states and 365 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:41:17,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:17,128 INFO L93 Difference]: Finished difference Result 541 states and 737 transitions. [2021-11-19 13:41:17,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:41:17,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) Word has length 281 [2021-11-19 13:41:17,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:17,136 INFO L225 Difference]: With dead ends: 541 [2021-11-19 13:41:17,136 INFO L226 Difference]: Without dead ends: 274 [2021-11-19 13:41:17,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 557 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 13:41:17,153 INFO L933 BasicCegarLoop]: 363 mSDtfsCounter, 2 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1448 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 13:41:17,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1448 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:41:17,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-19 13:41:17,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-11-19 13:41:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 163 states have (on average 1.2085889570552146) internal successors, (197), 164 states have internal predecessors, (197), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (86), 86 states have call predecessors, (86), 85 states have call successors, (86) [2021-11-19 13:41:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 369 transitions. [2021-11-19 13:41:17,216 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 369 transitions. Word has length 281 [2021-11-19 13:41:17,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:17,219 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 369 transitions. [2021-11-19 13:41:17,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (40), 2 states have call predecessors, (40), 3 states have return successors, (39), 3 states have call predecessors, (39), 2 states have call successors, (39) [2021-11-19 13:41:17,219 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 369 transitions. [2021-11-19 13:41:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-19 13:41:17,228 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:17,228 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:41:17,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 13:41:17,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:17,442 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash 224607552, now seen corresponding path program 1 times [2021-11-19 13:41:17,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:17,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045975392] [2021-11-19 13:41:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:17,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:17,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:17,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:17,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:41:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:18,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:41:18,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:19,583 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2021-11-19 13:41:19,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 847 backedges. 6 proven. 54 refuted. 0 times theorem prover too weak. 787 trivial. 0 not checked. [2021-11-19 13:41:20,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:20,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045975392] [2021-11-19 13:41:20,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045975392] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:41:20,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:41:20,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 13:41:20,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244655383] [2021-11-19 13:41:20,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:20,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:41:20,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:41:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:41:20,823 INFO L87 Difference]: Start difference. First operand 274 states and 369 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-19 13:41:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:21,257 INFO L93 Difference]: Finished difference Result 548 states and 741 transitions. [2021-11-19 13:41:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:41:21,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 305 [2021-11-19 13:41:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:21,264 INFO L225 Difference]: With dead ends: 548 [2021-11-19 13:41:21,264 INFO L226 Difference]: Without dead ends: 276 [2021-11-19 13:41:21,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 601 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 13:41:21,268 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:21,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1672 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:41:21,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-19 13:41:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2021-11-19 13:41:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 164 states have (on average 1.2073170731707317) internal successors, (198), 166 states have internal predecessors, (198), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (87), 86 states have call predecessors, (87), 85 states have call successors, (87) [2021-11-19 13:41:21,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 371 transitions. [2021-11-19 13:41:21,295 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 371 transitions. Word has length 305 [2021-11-19 13:41:21,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:21,296 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 371 transitions. [2021-11-19 13:41:21,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (43), 2 states have call predecessors, (43), 4 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-19 13:41:21,296 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 371 transitions. [2021-11-19 13:41:21,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-19 13:41:21,305 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:21,305 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:21,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:21,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:21,515 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:21,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:21,516 INFO L85 PathProgramCache]: Analyzing trace with hash 947024628, now seen corresponding path program 1 times [2021-11-19 13:41:21,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:21,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840520887] [2021-11-19 13:41:21,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:21,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:21,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:21,531 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:21,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:41:22,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:22,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1971 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:41:22,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:23,403 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 13:41:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-11-19 13:41:24,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:26,461 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 13:41:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2021-11-19 13:41:26,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:26,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840520887] [2021-11-19 13:41:26,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840520887] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:41:26,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:41:26,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 16 [2021-11-19 13:41:26,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955789362] [2021-11-19 13:41:26,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:26,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:41:26,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:26,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:41:26,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:41:26,835 INFO L87 Difference]: Start difference. First operand 276 states and 371 transitions. Second operand has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) [2021-11-19 13:41:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:27,393 INFO L93 Difference]: Finished difference Result 560 states and 751 transitions. [2021-11-19 13:41:27,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:41:27,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) Word has length 315 [2021-11-19 13:41:27,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:27,400 INFO L225 Difference]: With dead ends: 560 [2021-11-19 13:41:27,400 INFO L226 Difference]: Without dead ends: 285 [2021-11-19 13:41:27,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 630 GetRequests, 615 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:41:27,403 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 19 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:27,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1777 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 51 Unchecked, 0.4s Time] [2021-11-19 13:41:27,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-19 13:41:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2021-11-19 13:41:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 172 states have (on average 1.2093023255813953) internal successors, (208), 174 states have internal predecessors, (208), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (88), 86 states have call predecessors, (88), 85 states have call successors, (88) [2021-11-19 13:41:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 382 transitions. [2021-11-19 13:41:27,429 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 382 transitions. Word has length 315 [2021-11-19 13:41:27,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:27,430 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 382 transitions. [2021-11-19 13:41:27,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.454545454545455) internal successors, (104), 9 states have internal predecessors, (104), 4 states have call successors, (48), 3 states have call predecessors, (48), 5 states have return successors, (47), 5 states have call predecessors, (47), 4 states have call successors, (47) [2021-11-19 13:41:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 382 transitions. [2021-11-19 13:41:27,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-19 13:41:27,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:27,438 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:27,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:27,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:27,662 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:27,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash 605345714, now seen corresponding path program 1 times [2021-11-19 13:41:27,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:27,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538441471] [2021-11-19 13:41:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:27,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:27,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:27,667 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:27,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:41:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:29,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1968 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:41:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:29,975 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-11-19 13:41:29,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2021-11-19 13:41:31,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:31,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538441471] [2021-11-19 13:41:31,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538441471] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:41:31,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:41:31,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 13:41:31,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999752375] [2021-11-19 13:41:31,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:31,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:41:31,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:41:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:41:31,038 INFO L87 Difference]: Start difference. First operand 285 states and 382 transitions. Second operand has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-19 13:41:31,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:31,443 INFO L93 Difference]: Finished difference Result 564 states and 773 transitions. [2021-11-19 13:41:31,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:41:31,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) Word has length 315 [2021-11-19 13:41:31,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:31,448 INFO L225 Difference]: With dead ends: 564 [2021-11-19 13:41:31,449 INFO L226 Difference]: Without dead ends: 287 [2021-11-19 13:41:31,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 625 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 13:41:31,456 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 59 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:31,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1321 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:41:31,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-11-19 13:41:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2021-11-19 13:41:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 173 states have (on average 1.2023121387283238) internal successors, (208), 175 states have internal predecessors, (208), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (103), 87 states have call predecessors, (103), 86 states have call successors, (103) [2021-11-19 13:41:31,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 398 transitions. [2021-11-19 13:41:31,516 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 398 transitions. Word has length 315 [2021-11-19 13:41:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:31,517 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 398 transitions. [2021-11-19 13:41:31,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 26.0) internal successors, (104), 5 states have internal predecessors, (104), 3 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (47), 3 states have call predecessors, (47), 3 states have call successors, (47) [2021-11-19 13:41:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 398 transitions. [2021-11-19 13:41:31,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-19 13:41:31,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:31,528 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:31,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:31,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:31,754 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:31,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1717919787, now seen corresponding path program 1 times [2021-11-19 13:41:31,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:31,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411669961] [2021-11-19 13:41:31,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:31,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:31,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:31,761 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:31,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:41:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:33,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1985 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:41:33,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:33,654 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 13:41:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-11-19 13:41:35,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:36,935 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 13:41:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 777 trivial. 0 not checked. [2021-11-19 13:41:37,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:37,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411669961] [2021-11-19 13:41:37,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411669961] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:41:37,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:41:37,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 18 [2021-11-19 13:41:37,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662267943] [2021-11-19 13:41:37,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:37,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:41:37,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:37,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:41:37,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:41:37,313 INFO L87 Difference]: Start difference. First operand 287 states and 398 transitions. Second operand has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2021-11-19 13:41:39,447 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 13:41:41,470 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:41:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:43,111 INFO L93 Difference]: Finished difference Result 575 states and 797 transitions. [2021-11-19 13:41:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:41:43,113 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) Word has length 321 [2021-11-19 13:41:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:43,117 INFO L225 Difference]: With dead ends: 575 [2021-11-19 13:41:43,118 INFO L226 Difference]: Without dead ends: 290 [2021-11-19 13:41:43,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:41:43,121 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 9 mSDsluCounter, 3261 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 242 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:43,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 3618 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 2 Unknown, 242 Unchecked, 5.6s Time] [2021-11-19 13:41:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-19 13:41:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2021-11-19 13:41:43,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 175 states have (on average 1.2) internal successors, (210), 177 states have internal predecessors, (210), 88 states have call successors, (88), 25 states have call predecessors, (88), 26 states have return successors, (104), 87 states have call predecessors, (104), 87 states have call successors, (104) [2021-11-19 13:41:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 402 transitions. [2021-11-19 13:41:43,146 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 402 transitions. Word has length 321 [2021-11-19 13:41:43,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:43,147 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 402 transitions. [2021-11-19 13:41:43,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.818181818181818) internal successors, (108), 10 states have internal predecessors, (108), 5 states have call successors, (49), 3 states have call predecessors, (49), 6 states have return successors, (48), 6 states have call predecessors, (48), 5 states have call successors, (48) [2021-11-19 13:41:43,148 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 402 transitions. [2021-11-19 13:41:43,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-19 13:41:43,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:43,152 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:43,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:43,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:43,374 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:43,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:43,375 INFO L85 PathProgramCache]: Analyzing trace with hash 870325970, now seen corresponding path program 1 times [2021-11-19 13:41:43,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:43,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031898388] [2021-11-19 13:41:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:43,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:43,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:43,380 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:43,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:41:44,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:44,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:41:44,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:45,883 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 427 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-19 13:41:45,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 834 backedges. 17 proven. 43 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked. [2021-11-19 13:41:46,996 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:46,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031898388] [2021-11-19 13:41:46,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1031898388] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:41:46,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:41:46,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 13:41:46,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652157365] [2021-11-19 13:41:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:46,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:41:46,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:46,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:41:46,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:41:46,999 INFO L87 Difference]: Start difference. First operand 290 states and 402 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:41:47,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:47,326 INFO L93 Difference]: Finished difference Result 567 states and 789 transitions. [2021-11-19 13:41:47,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:41:47,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) Word has length 326 [2021-11-19 13:41:47,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:47,332 INFO L225 Difference]: With dead ends: 567 [2021-11-19 13:41:47,332 INFO L226 Difference]: Without dead ends: 288 [2021-11-19 13:41:47,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 643 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 13:41:47,336 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 2 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:47,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1672 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:41:47,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-19 13:41:47,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 284. [2021-11-19 13:41:47,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (102), 86 states have call predecessors, (102), 87 states have call successors, (102) [2021-11-19 13:41:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 394 transitions. [2021-11-19 13:41:47,360 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 394 transitions. Word has length 326 [2021-11-19 13:41:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:47,361 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 394 transitions. [2021-11-19 13:41:47,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 3 states have call successors, (53), 2 states have call predecessors, (53), 4 states have return successors, (52), 3 states have call predecessors, (52), 3 states have call successors, (52) [2021-11-19 13:41:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 394 transitions. [2021-11-19 13:41:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-19 13:41:47,364 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:47,365 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:47,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:47,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:47,578 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:47,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:47,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1951086534, now seen corresponding path program 1 times [2021-11-19 13:41:47,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:47,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029789296] [2021-11-19 13:41:47,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:47,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:47,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:47,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:47,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:41:49,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:49,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:41:49,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:41:50,354 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 13:41:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 455 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-19 13:41:51,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:41:52,568 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 13:41:53,195 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 21 proven. 30 refuted. 0 times theorem prover too weak. 832 trivial. 0 not checked. [2021-11-19 13:41:53,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:41:53,196 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029789296] [2021-11-19 13:41:53,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029789296] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:41:53,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:41:53,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 16 [2021-11-19 13:41:53,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254218589] [2021-11-19 13:41:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:53,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:41:53,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:41:53,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:41:53,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:41:53,200 INFO L87 Difference]: Start difference. First operand 284 states and 394 transitions. Second operand has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 13:41:55,315 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 13:41:57,323 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 13:41:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:59,103 INFO L93 Difference]: Finished difference Result 536 states and 745 transitions. [2021-11-19 13:41:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:41:59,105 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) Word has length 336 [2021-11-19 13:41:59,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:59,113 INFO L225 Difference]: With dead ends: 536 [2021-11-19 13:41:59,113 INFO L226 Difference]: Without dead ends: 288 [2021-11-19 13:41:59,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 657 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:41:59,117 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 6 mSDsluCounter, 2301 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:59,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2662 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 2 Unknown, 74 Unchecked, 5.8s Time] [2021-11-19 13:41:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-19 13:41:59,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-19 13:41:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 175 states have (on average 1.1942857142857144) internal successors, (209), 175 states have internal predecessors, (209), 88 states have call successors, (88), 26 states have call predecessors, (88), 24 states have return successors, (102), 86 states have call predecessors, (102), 87 states have call successors, (102) [2021-11-19 13:41:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 399 transitions. [2021-11-19 13:41:59,146 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 399 transitions. Word has length 336 [2021-11-19 13:41:59,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:59,147 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 399 transitions. [2021-11-19 13:41:59,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.909090909090908) internal successors, (109), 9 states have internal predecessors, (109), 4 states have call successors, (50), 3 states have call predecessors, (50), 5 states have return successors, (49), 5 states have call predecessors, (49), 4 states have call successors, (49) [2021-11-19 13:41:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 399 transitions. [2021-11-19 13:41:59,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2021-11-19 13:41:59,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:59,152 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:41:59,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:59,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:41:59,366 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:59,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:59,367 INFO L85 PathProgramCache]: Analyzing trace with hash 726440312, now seen corresponding path program 1 times [2021-11-19 13:41:59,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:59,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92860499] [2021-11-19 13:41:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:59,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:59,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:59,370 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:59,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:42:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:01,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 2093 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:42:01,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 439 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-19 13:42:02,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 883 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2021-11-19 13:42:03,305 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:03,305 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92860499] [2021-11-19 13:42:03,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92860499] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:42:03,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:42:03,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 13:42:03,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017368349] [2021-11-19 13:42:03,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:03,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:42:03,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:42:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:42:03,308 INFO L87 Difference]: Start difference. First operand 288 states and 399 transitions. Second operand has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-19 13:42:03,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:03,680 INFO L93 Difference]: Finished difference Result 533 states and 741 transitions. [2021-11-19 13:42:03,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:42:03,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 336 [2021-11-19 13:42:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:03,685 INFO L225 Difference]: With dead ends: 533 [2021-11-19 13:42:03,685 INFO L226 Difference]: Without dead ends: 288 [2021-11-19 13:42:03,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 667 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 13:42:03,688 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 57 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:03,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1322 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:42:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-19 13:42:03,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-19 13:42:03,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 175 states have (on average 1.1942857142857144) internal successors, (209), 175 states have internal predecessors, (209), 88 states have call successors, (88), 26 states have call predecessors, (88), 24 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2021-11-19 13:42:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 396 transitions. [2021-11-19 13:42:03,712 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 396 transitions. Word has length 336 [2021-11-19 13:42:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:03,713 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 396 transitions. [2021-11-19 13:42:03,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 25.25) internal successors, (101), 5 states have internal predecessors, (101), 3 states have call successors, (43), 2 states have call predecessors, (43), 3 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-19 13:42:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 396 transitions. [2021-11-19 13:42:03,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-19 13:42:03,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:03,717 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:42:03,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:03,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:03,938 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:42:03,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:03,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1622214181, now seen corresponding path program 1 times [2021-11-19 13:42:03,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:03,945 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1631321566] [2021-11-19 13:42:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:03,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:03,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:03,947 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:03,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:42:05,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:05,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 2110 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:42:05,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:06,308 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 13:42:07,552 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 461 proven. 0 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-11-19 13:42:07,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:08,831 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 13:42:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 26 proven. 30 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-11-19 13:42:09,495 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:09,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1631321566] [2021-11-19 13:42:09,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1631321566] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:42:09,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:42:09,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 18 [2021-11-19 13:42:09,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372349125] [2021-11-19 13:42:09,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:09,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:42:09,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:09,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:42:09,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:42:09,498 INFO L87 Difference]: Start difference. First operand 288 states and 396 transitions. Second operand has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) [2021-11-19 13:42:11,606 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 13:42:12,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:12,777 INFO L93 Difference]: Finished difference Result 552 states and 758 transitions. [2021-11-19 13:42:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:42:12,779 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) Word has length 342 [2021-11-19 13:42:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:12,783 INFO L225 Difference]: With dead ends: 552 [2021-11-19 13:42:12,783 INFO L226 Difference]: Without dead ends: 291 [2021-11-19 13:42:12,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:42:12,785 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 14 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2107 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:12,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2107 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 1 Unknown, 121 Unchecked, 3.1s Time] [2021-11-19 13:42:12,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2021-11-19 13:42:12,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 284. [2021-11-19 13:42:12,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 171 states have (on average 1.1929824561403508) internal successors, (204), 172 states have internal predecessors, (204), 88 states have call successors, (88), 25 states have call predecessors, (88), 24 states have return successors, (99), 86 states have call predecessors, (99), 87 states have call successors, (99) [2021-11-19 13:42:12,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2021-11-19 13:42:12,805 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 342 [2021-11-19 13:42:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:12,806 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2021-11-19 13:42:12,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.272727272727273) internal successors, (113), 10 states have internal predecessors, (113), 5 states have call successors, (51), 3 states have call predecessors, (51), 6 states have return successors, (50), 6 states have call predecessors, (50), 5 states have call successors, (50) [2021-11-19 13:42:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2021-11-19 13:42:12,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2021-11-19 13:42:12,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:12,809 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:42:12,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:13,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:13,034 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:42:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:13,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1674881120, now seen corresponding path program 2 times [2021-11-19 13:42:13,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:13,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655439970] [2021-11-19 13:42:13,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:42:13,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:13,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:13,039 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:13,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:42:20,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:42:20,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:42:20,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 2127 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:42:20,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:21,113 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 566 trivial. 0 not checked. [2021-11-19 13:42:21,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 42 proven. 24 refuted. 0 times theorem prover too weak. 834 trivial. 0 not checked. [2021-11-19 13:42:22,145 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:22,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655439970] [2021-11-19 13:42:22,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655439970] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:42:22,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:42:22,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 13:42:22,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885348523] [2021-11-19 13:42:22,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:22,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:42:22,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:22,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:42:22,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:42:22,148 INFO L87 Difference]: Start difference. First operand 284 states and 391 transitions. Second operand has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 13:42:22,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:22,522 INFO L93 Difference]: Finished difference Result 487 states and 707 transitions. [2021-11-19 13:42:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:42:22,523 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 347 [2021-11-19 13:42:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:22,527 INFO L225 Difference]: With dead ends: 487 [2021-11-19 13:42:22,527 INFO L226 Difference]: Without dead ends: 290 [2021-11-19 13:42:22,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 686 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 13:42:22,530 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:22,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:42:22,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-19 13:42:22,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2021-11-19 13:42:22,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 175 states have internal predecessors, (206), 88 states have call successors, (88), 25 states have call predecessors, (88), 25 states have return successors, (114), 86 states have call predecessors, (114), 87 states have call successors, (114) [2021-11-19 13:42:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 408 transitions. [2021-11-19 13:42:22,557 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 408 transitions. Word has length 347 [2021-11-19 13:42:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:22,558 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 408 transitions. [2021-11-19 13:42:22,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 13:42:22,559 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 408 transitions. [2021-11-19 13:42:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-19 13:42:22,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:22,563 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:42:22,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-19 13:42:22,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:22,790 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:42:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1222453825, now seen corresponding path program 2 times [2021-11-19 13:42:22,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:22,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489792687] [2021-11-19 13:42:22,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:42:22,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:22,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:22,797 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:22,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 13:42:29,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:42:29,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:42:30,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 2141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:42:30,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 334 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2021-11-19 13:42:31,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 872 trivial. 0 not checked. [2021-11-19 13:42:33,171 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:33,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489792687] [2021-11-19 13:42:33,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489792687] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:42:33,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:42:33,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-19 13:42:33,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325872303] [2021-11-19 13:42:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:33,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:42:33,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:42:33,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:42:33,174 INFO L87 Difference]: Start difference. First operand 287 states and 408 transitions. Second operand has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-19 13:42:35,332 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:42:37,336 WARN L515 Checker$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 13:42:39,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:39,041 INFO L93 Difference]: Finished difference Result 491 states and 730 transitions. [2021-11-19 13:42:39,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:42:39,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) Word has length 353 [2021-11-19 13:42:39,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:39,052 INFO L225 Difference]: With dead ends: 491 [2021-11-19 13:42:39,052 INFO L226 Difference]: Without dead ends: 289 [2021-11-19 13:42:39,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 707 GetRequests, 694 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:42:39,056 INFO L933 BasicCegarLoop]: 360 mSDtfsCounter, 7 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:39,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2323 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 2 Unknown, 165 Unchecked, 5.5s Time] [2021-11-19 13:42:39,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-19 13:42:39,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 286. [2021-11-19 13:42:39,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 173 states have (on average 1.1907514450867052) internal successors, (206), 174 states have internal predecessors, (206), 87 states have call successors, (87), 25 states have call predecessors, (87), 25 states have return successors, (113), 86 states have call predecessors, (113), 86 states have call successors, (113) [2021-11-19 13:42:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 406 transitions. [2021-11-19 13:42:39,083 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 406 transitions. Word has length 353 [2021-11-19 13:42:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:39,087 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 406 transitions. [2021-11-19 13:42:39,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 3 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (37), 2 states have call predecessors, (37), 3 states have call successors, (37) [2021-11-19 13:42:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 406 transitions. [2021-11-19 13:42:39,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-19 13:42:39,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:39,092 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:42:39,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:39,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:39,314 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:42:39,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:39,315 INFO L85 PathProgramCache]: Analyzing trace with hash 132787104, now seen corresponding path program 3 times [2021-11-19 13:42:39,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:39,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067494785] [2021-11-19 13:42:39,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:42:39,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:39,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:39,322 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:39,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:42:45,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-19 13:42:45,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:42:45,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:42:45,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 762 trivial. 0 not checked. [2021-11-19 13:42:46,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:47,784 INFO L134 CoverageAnalysis]: Checked inductivity of 928 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 862 trivial. 0 not checked. [2021-11-19 13:42:47,785 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:47,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067494785] [2021-11-19 13:42:47,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067494785] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:42:47,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:42:47,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 13:42:47,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177337480] [2021-11-19 13:42:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:47,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:42:47,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:42:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:42:47,788 INFO L87 Difference]: Start difference. First operand 286 states and 406 transitions. Second operand has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 13:42:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:48,185 INFO L93 Difference]: Finished difference Result 482 states and 703 transitions. [2021-11-19 13:42:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:42:48,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 358 [2021-11-19 13:42:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:48,190 INFO L225 Difference]: With dead ends: 482 [2021-11-19 13:42:48,190 INFO L226 Difference]: Without dead ends: 289 [2021-11-19 13:42:48,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 715 GetRequests, 708 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 13:42:48,195 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:48,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:42:48,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-19 13:42:48,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-11-19 13:42:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 177 states have internal predecessors, (208), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (123), 86 states have call predecessors, (123), 86 states have call successors, (123) [2021-11-19 13:42:48,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 418 transitions. [2021-11-19 13:42:48,221 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 418 transitions. Word has length 358 [2021-11-19 13:42:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:48,222 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 418 transitions. [2021-11-19 13:42:48,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-19 13:42:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 418 transitions. [2021-11-19 13:42:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-19 13:42:48,227 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:48,230 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:42:48,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:48,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:48,448 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:42:48,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2107400608, now seen corresponding path program 4 times [2021-11-19 13:42:48,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:48,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [375145382] [2021-11-19 13:42:48,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 13:42:48,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:48,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:48,453 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:48,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 13:42:50,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 13:42:50,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:42:51,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:42:51,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 339 proven. 0 refuted. 0 times theorem prover too weak. 628 trivial. 0 not checked. [2021-11-19 13:42:51,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:42:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 48 proven. 18 refuted. 0 times theorem prover too weak. 901 trivial. 0 not checked. [2021-11-19 13:42:52,929 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:42:52,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [375145382] [2021-11-19 13:42:52,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [375145382] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:42:52,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:42:52,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 13:42:52,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482881402] [2021-11-19 13:42:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:52,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:42:52,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:42:52,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:42:52,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:42:52,933 INFO L87 Difference]: Start difference. First operand 289 states and 418 transitions. Second operand has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-19 13:42:53,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:53,293 INFO L93 Difference]: Finished difference Result 491 states and 727 transitions. [2021-11-19 13:42:53,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:42:53,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) Word has length 369 [2021-11-19 13:42:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:53,299 INFO L225 Difference]: With dead ends: 491 [2021-11-19 13:42:53,299 INFO L226 Difference]: Without dead ends: 289 [2021-11-19 13:42:53,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 737 GetRequests, 730 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 13:42:53,302 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 2 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:53,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2005 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:42:53,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-11-19 13:42:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2021-11-19 13:42:53,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 175 states have (on average 1.1885714285714286) internal successors, (208), 177 states have internal predecessors, (208), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (122), 86 states have call predecessors, (122), 86 states have call successors, (122) [2021-11-19 13:42:53,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 417 transitions. [2021-11-19 13:42:53,329 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 417 transitions. Word has length 369 [2021-11-19 13:42:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:53,330 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 417 transitions. [2021-11-19 13:42:53,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 3 states have call predecessors, (38), 3 states have call successors, (38) [2021-11-19 13:42:53,331 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 417 transitions. [2021-11-19 13:42:53,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-19 13:42:53,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:53,335 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-19 13:42:53,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:42:53,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:42:53,555 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:42:53,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:53,555 INFO L85 PathProgramCache]: Analyzing trace with hash -133143286, now seen corresponding path program 5 times [2021-11-19 13:42:53,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:42:53,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731809829] [2021-11-19 13:42:53,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:42:53,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:42:53,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:42:53,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:42:53,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:43:20,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-11-19 13:43:20,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:43:20,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 13:43:20,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:43:24,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 491 proven. 11 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2021-11-19 13:43:24,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:25,959 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-19 13:43:25,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-19 13:43:25,979 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-19 13:43:25,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-19 13:43:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 34 proven. 40 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2021-11-19 13:43:26,625 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:43:26,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731809829] [2021-11-19 13:43:26,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731809829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:43:26,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1374851918] [2021-11-19 13:43:26,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 13:43:26,626 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:43:26,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:43:26,628 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:43:26,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39d897b3-6a21-4eed-bb5d-6b18160e5247/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process