./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:32:32,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:32:32,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:32:32,712 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:32:32,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:32:32,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:32:32,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:32:32,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:32:32,720 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:32:32,722 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:32:32,723 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:32:32,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:32:32,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:32:32,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:32:32,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:32:32,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:32:32,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:32:32,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:32:32,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:32:32,736 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:32:32,738 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:32:32,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:32:32,746 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:32:32,747 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:32:32,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:32:32,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:32:32,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:32:32,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:32:32,753 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:32:32,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:32:32,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:32:32,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:32:32,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:32:32,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:32:32,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:32:32,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:32:32,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:32:32,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:32:32,770 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:32:32,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:32:32,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:32:32,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:32:32,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:32:32,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:32:32,814 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:32:32,818 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:32:32,818 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:32:32,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:32:32,818 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:32:32,819 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:32:32,819 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:32:32,819 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:32:32,820 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:32:32,820 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:32:32,821 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:32:32,821 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:32:32,821 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:32:32,822 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:32:32,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:32:32,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:32:32,823 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:32:32,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:32:32,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:32:32,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:32:32,824 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:32:32,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:32:32,825 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:32:32,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:32:32,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:32:32,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:32:32,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:32:32,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:32:32,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:32:32,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:32:32,829 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:32:32,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:32:32,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:32:32,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:32:32,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:32:32,830 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-11-19 13:32:33,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:32:33,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:32:33,171 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:32:33,173 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:32:33,174 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:32:33,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-19 13:32:33,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data/adcfda7be/c6349593fd2b47fd89b02235ad05a9ab/FLAG091d4875a [2021-11-19 13:32:34,122 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:32:34,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-19 13:32:34,181 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data/adcfda7be/c6349593fd2b47fd89b02235ad05a9ab/FLAG091d4875a [2021-11-19 13:32:34,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data/adcfda7be/c6349593fd2b47fd89b02235ad05a9ab [2021-11-19 13:32:34,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:32:34,575 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:32:34,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:32:34,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:32:34,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:32:34,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:32:34" (1/1) ... [2021-11-19 13:32:34,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b513d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:34, skipping insertion in model container [2021-11-19 13:32:34,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:32:34" (1/1) ... [2021-11-19 13:32:34,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:32:34,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:32:35,077 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-19 13:32:35,085 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-19 13:32:35,113 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:32:35,119 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:32:36,183 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,184 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,184 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,185 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,187 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,203 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,204 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,206 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,207 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,209 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,211 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,212 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,212 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:36,748 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:32:36,749 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:32:36,750 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:32:36,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:32:36,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:32:36,754 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:32:36,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:32:36,756 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:32:36,756 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:32:36,757 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:32:36,960 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:32:37,410 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,413 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,452 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,456 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,464 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,464 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,483 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,488 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,489 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,489 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,489 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,490 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,490 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:37,551 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:32:37,599 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 13:32:37,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@219d3c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:37, skipping insertion in model container [2021-11-19 13:32:37,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:32:37,600 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:32:37,603 INFO L158 Benchmark]: Toolchain (without parser) took 3026.54ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 62.5MB in the beginning and 78.8MB in the end (delta: -16.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-19 13:32:37,603 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory was 57.9MB in the beginning and 57.8MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:32:37,605 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3022.30ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 62.3MB in the beginning and 78.8MB in the end (delta: -16.5MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-19 13:32:37,608 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory was 57.9MB in the beginning and 57.8MB in the end (delta: 46.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3022.30ms. Allocated memory was 104.9MB in the beginning and 140.5MB in the end (delta: 35.7MB). Free memory was 62.3MB in the beginning and 78.8MB in the end (delta: -16.5MB). Peak memory consumption was 33.6MB. 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/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 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:32:39,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:32:39,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:32:39,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:32:39,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:32:39,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:32:39,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:32:39,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:32:39,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:32:39,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:32:39,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:32:39,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:32:39,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:32:39,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:32:39,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:32:39,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:32:39,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:32:39,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:32:39,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:32:39,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:32:39,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:32:39,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:32:39,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:32:39,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:32:39,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:32:39,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:32:39,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:32:39,917 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:32:39,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:32:39,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:32:39,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:32:39,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:32:39,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:32:39,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:32:39,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:32:39,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:32:39,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:32:39,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:32:39,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:32:39,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:32:39,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:32:39,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:32:39,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:32:39,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:32:39,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:32:39,985 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:32:39,986 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:32:39,986 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:32:39,986 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:32:39,986 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:32:39,987 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:32:39,987 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:32:39,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:32:39,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:32:39,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:32:39,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:32:39,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:32:39,990 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:32:39,991 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:32:39,991 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:32:39,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:32:39,991 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:32:39,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:32:39,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:32:39,992 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:32:39,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:32:39,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:32:39,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:32:39,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:32:39,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:32:39,993 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:32:39,994 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:32:39,994 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:32:39,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:32:39,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:32:39,995 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f893dc40cf70b8d30dda6e110329e0bc2218e18bc668acf080889b069fe51ab [2021-11-19 13:32:40,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:32:40,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:32:40,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:32:40,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:32:40,407 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:32:40,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-19 13:32:40,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data/2158d5d3b/0994b52729db47f692abede9b57973ba/FLAG1710d43cd [2021-11-19 13:32:41,411 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:32:41,412 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i [2021-11-19 13:32:41,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data/2158d5d3b/0994b52729db47f692abede9b57973ba/FLAG1710d43cd [2021-11-19 13:32:41,869 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/data/2158d5d3b/0994b52729db47f692abede9b57973ba [2021-11-19 13:32:41,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:32:41,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:32:41,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:32:41,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:32:41,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:32:41,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:32:41" (1/1) ... [2021-11-19 13:32:41,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@780d9386 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:41, skipping insertion in model container [2021-11-19 13:32:41,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:32:41" (1/1) ... [2021-11-19 13:32:41,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:32:42,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:32:42,361 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-19 13:32:42,368 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-19 13:32:42,402 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:32:42,410 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:32:43,600 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,605 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,606 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,607 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,608 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,640 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,644 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,647 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,650 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,655 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,657 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,660 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:43,661 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,244 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:32:44,246 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:32:44,249 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:32:44,252 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:32:44,254 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:32:44,255 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:32:44,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:32:44,256 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:32:44,259 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:32:44,267 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:32:44,493 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:32:44,902 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,902 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,942 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,951 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,952 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,974 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,975 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,976 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:44,976 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,007 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,008 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,061 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:32:45,121 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:32:45,187 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:32:45,192 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-19 13:32:45,192 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-19 13:32:45,194 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:32:45,194 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:32:45,248 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,249 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,249 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,250 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,250 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,259 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,262 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,264 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,264 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,265 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,266 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,307 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:32:45,308 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:32:45,309 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:32:45,310 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:32:45,311 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:32:45,312 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:32:45,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:32:45,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:32:45,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:32:45,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:32:45,362 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:32:45,516 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,516 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,536 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,557 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,557 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,571 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,572 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,573 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,573 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,574 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,574 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,575 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,596 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:32:45,636 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:32:45,662 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4493,4506] [2021-11-19 13:32:45,662 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_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/sv-benchmarks/c/aws-c-common/aws_hash_iter_begin_harness.i[4553,4566] [2021-11-19 13:32:45,665 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:32:45,666 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:32:45,705 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,707 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,707 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,708 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,709 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,715 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,717 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,718 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,718 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,721 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,723 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,723 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,772 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:32:45,773 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:32:45,774 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:32:45,775 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:32:45,776 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:32:45,776 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:32:45,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:32:45,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:32:45,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:32:45,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:32:45,799 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:32:45,921 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,922 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,934 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,935 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,951 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,952 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,952 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,953 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,953 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,954 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,954 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:32:45,981 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:32:46,351 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:32:46,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46 WrapperNode [2021-11-19 13:32:46,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:32:46,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:32:46,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:32:46,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:32:46,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,550 INFO L137 Inliner]: procedures = 796, calls = 2448, calls flagged for inlining = 69, calls inlined = 11, statements flattened = 616 [2021-11-19 13:32:46,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:32:46,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:32:46,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:32:46,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:32:46,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:32:46,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:32:46,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:32:46,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:32:46,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (1/1) ... [2021-11-19 13:32:46,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:32:46,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:32:46,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:32:46,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:32:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-19 13:32:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 13:32:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 13:32:46,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:32:46,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:32:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-19 13:32:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-19 13:32:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:32:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:32:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:32:46,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:32:46,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:32:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:32:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:32:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 13:32:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 13:32:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-19 13:32:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 13:32:46,793 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 13:32:46,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:32:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-19 13:32:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-19 13:32:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 13:32:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:32:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-19 13:32:46,794 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-19 13:32:46,794 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-19 13:32:46,795 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-19 13:32:46,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:32:46,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:32:46,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:32:46,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:32:46,795 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_begin [2021-11-19 13:32:46,795 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_begin [2021-11-19 13:32:46,795 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-19 13:32:46,796 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-19 13:32:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:32:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:32:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 13:32:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2021-11-19 13:32:46,796 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2021-11-19 13:32:46,796 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:32:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:32:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2021-11-19 13:32:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2021-11-19 13:32:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:32:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:32:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 13:32:46,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-19 13:32:46,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-19 13:32:46,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:32:46,798 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 13:32:46,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 13:32:46,798 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-19 13:32:46,798 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-19 13:32:47,276 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:32:47,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:32:47,571 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2021-11-19 13:32:54,129 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:32:54,141 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:32:54,141 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-19 13:32:54,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:32:54 BoogieIcfgContainer [2021-11-19 13:32:54,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:32:54,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:32:54,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:32:54,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:32:54,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:32:41" (1/3) ... [2021-11-19 13:32:54,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573d956a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:32:54, skipping insertion in model container [2021-11-19 13:32:54,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:32:46" (2/3) ... [2021-11-19 13:32:54,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573d956a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:32:54, skipping insertion in model container [2021-11-19 13:32:54,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:32:54" (3/3) ... [2021-11-19 13:32:54,154 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_begin_harness.i [2021-11-19 13:32:54,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:32:54,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:32:54,228 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:32:54,235 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 13:32:54,235 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 13:32:54,260 INFO L276 IsEmpty]: Start isEmpty. Operand has 167 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 109 states have internal predecessors, (138), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-19 13:32:54,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-19 13:32:54,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:54,282 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:54,283 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:32:54,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:54,289 INFO L85 PathProgramCache]: Analyzing trace with hash -879845289, now seen corresponding path program 1 times [2021-11-19 13:32:54,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:54,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673838239] [2021-11-19 13:32:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:54,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:54,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:54,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:54,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:32:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:55,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:32:55,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-11-19 13:32:55,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:56,162 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-11-19 13:32:56,163 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:56,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673838239] [2021-11-19 13:32:56,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673838239] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:56,164 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:56,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 13:32:56,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123650044] [2021-11-19 13:32:56,166 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:56,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:32:56,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:32:56,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:32:56,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:32:56,202 INFO L87 Difference]: Start difference. First operand has 167 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 109 states have internal predecessors, (138), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 13:32:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:56,246 INFO L93 Difference]: Finished difference Result 325 states and 445 transitions. [2021-11-19 13:32:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:32:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 144 [2021-11-19 13:32:56,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:56,263 INFO L225 Difference]: With dead ends: 325 [2021-11-19 13:32:56,264 INFO L226 Difference]: Without dead ends: 160 [2021-11-19 13:32:56,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:32:56,272 INFO L933 BasicCegarLoop]: 211 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, 211 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 13:32:56,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:32:56,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-19 13:32:56,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-11-19 13:32:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 102 states have (on average 1.2352941176470589) internal successors, (126), 103 states have internal predecessors, (126), 40 states have call successors, (40), 17 states have call predecessors, (40), 17 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-11-19 13:32:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 205 transitions. [2021-11-19 13:32:56,331 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 205 transitions. Word has length 144 [2021-11-19 13:32:56,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:56,334 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 205 transitions. [2021-11-19 13:32:56,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.5) internal successors, (55), 2 states have internal predecessors, (55), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-19 13:32:56,334 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 205 transitions. [2021-11-19 13:32:56,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-19 13:32:56,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:56,339 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:56,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:32:56,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:32:56,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:32:56,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:56,560 INFO L85 PathProgramCache]: Analyzing trace with hash 524131341, now seen corresponding path program 1 times [2021-11-19 13:32:56,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:56,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120236440] [2021-11-19 13:32:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:56,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:56,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:56,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:56,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:32:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:57,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:32:57,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:32:58,054 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-19 13:32:58,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:32:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-19 13:32:58,530 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:32:58,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120236440] [2021-11-19 13:32:58,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120236440] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:32:58,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:32:58,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 13:32:58,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037017408] [2021-11-19 13:32:58,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:58,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:32:58,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:32:58,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:32:58,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:32:58,537 INFO L87 Difference]: Start difference. First operand 160 states and 205 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 13:32:58,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:58,658 INFO L93 Difference]: Finished difference Result 312 states and 401 transitions. [2021-11-19 13:32:58,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:32:58,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 150 [2021-11-19 13:32:58,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:58,664 INFO L225 Difference]: With dead ends: 312 [2021-11-19 13:32:58,665 INFO L226 Difference]: Without dead ends: 164 [2021-11-19 13:32:58,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:32:58,668 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 2 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:58,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 808 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:32:58,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-19 13:32:58,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-19 13:32:58,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 105 states have (on average 1.2285714285714286) internal successors, (129), 106 states have internal predecessors, (129), 40 states have call successors, (40), 17 states have call predecessors, (40), 18 states have return successors, (40), 40 states have call predecessors, (40), 39 states have call successors, (40) [2021-11-19 13:32:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2021-11-19 13:32:58,695 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 150 [2021-11-19 13:32:58,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:58,696 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2021-11-19 13:32:58,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 13:32:58,697 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2021-11-19 13:32:58,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-19 13:32:58,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:58,701 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:58,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:32:58,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:32:58,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:32:58,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:58,920 INFO L85 PathProgramCache]: Analyzing trace with hash -992467699, now seen corresponding path program 1 times [2021-11-19 13:32:58,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:32:58,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475699641] [2021-11-19 13:32:58,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:58,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:32:58,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:32:58,926 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:32:58,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:32:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:59,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:32:59,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:00,261 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-19 13:33:00,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-11-19 13:33:00,845 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:00,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475699641] [2021-11-19 13:33:00,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475699641] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:00,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:33:00,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 13:33:00,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595187227] [2021-11-19 13:33:00,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:00,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:33:00,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:00,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:33:00,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:33:00,848 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 13:33:01,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:01,046 INFO L93 Difference]: Finished difference Result 318 states and 405 transitions. [2021-11-19 13:33:01,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:33:01,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 162 [2021-11-19 13:33:01,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:01,051 INFO L225 Difference]: With dead ends: 318 [2021-11-19 13:33:01,051 INFO L226 Difference]: Without dead ends: 166 [2021-11-19 13:33:01,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 315 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 13:33:01,054 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:01,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:33:01,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-19 13:33:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-19 13:33:01,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 106 states have (on average 1.2264150943396226) internal successors, (130), 108 states have internal predecessors, (130), 40 states have call successors, (40), 17 states have call predecessors, (40), 19 states have return successors, (41), 40 states have call predecessors, (41), 39 states have call successors, (41) [2021-11-19 13:33:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2021-11-19 13:33:01,071 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 162 [2021-11-19 13:33:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:01,072 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2021-11-19 13:33:01,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 13:33:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2021-11-19 13:33:01,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-19 13:33:01,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:01,076 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:01,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:01,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:01,296 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:01,297 INFO L85 PathProgramCache]: Analyzing trace with hash 841342826, now seen corresponding path program 1 times [2021-11-19 13:33:01,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:01,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019370909] [2021-11-19 13:33:01,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:01,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:01,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:01,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:01,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 13:33:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:02,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:33:02,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:02,648 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 13:33:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-19 13:33:03,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:04,455 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 13:33:04,784 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-19 13:33:04,784 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:04,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019370909] [2021-11-19 13:33:04,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019370909] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:04,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:33:04,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 15 [2021-11-19 13:33:04,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370557537] [2021-11-19 13:33:04,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:04,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:33:04,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:04,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:33:04,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:33:04,787 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 13:33:05,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:05,305 INFO L93 Difference]: Finished difference Result 321 states and 407 transitions. [2021-11-19 13:33:05,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:33:05,308 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 167 [2021-11-19 13:33:05,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:05,311 INFO L225 Difference]: With dead ends: 321 [2021-11-19 13:33:05,311 INFO L226 Difference]: Without dead ends: 175 [2021-11-19 13:33:05,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:33:05,313 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 14 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:05,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 1154 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 68 Unchecked, 0.4s Time] [2021-11-19 13:33:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-19 13:33:05,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-11-19 13:33:05,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 114 states have (on average 1.2280701754385965) internal successors, (140), 116 states have internal predecessors, (140), 40 states have call successors, (40), 18 states have call predecessors, (40), 20 states have return successors, (42), 40 states have call predecessors, (42), 39 states have call successors, (42) [2021-11-19 13:33:05,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 222 transitions. [2021-11-19 13:33:05,331 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 222 transitions. Word has length 167 [2021-11-19 13:33:05,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:05,332 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 222 transitions. [2021-11-19 13:33:05,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 4 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2021-11-19 13:33:05,332 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 222 transitions. [2021-11-19 13:33:05,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-19 13:33:05,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:05,336 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:05,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:05,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:05,543 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:05,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:05,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1872383724, now seen corresponding path program 1 times [2021-11-19 13:33:05,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:05,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62333822] [2021-11-19 13:33:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:05,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:05,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:05,547 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:05,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 13:33:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:06,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 1515 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:33:06,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:06,983 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-19 13:33:06,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-19 13:33:07,511 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:07,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62333822] [2021-11-19 13:33:07,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62333822] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:07,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:33:07,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 13:33:07,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194649555] [2021-11-19 13:33:07,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:07,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:33:07,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:07,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:33:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:33:07,514 INFO L87 Difference]: Start difference. First operand 175 states and 222 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:33:07,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:07,666 INFO L93 Difference]: Finished difference Result 325 states and 416 transitions. [2021-11-19 13:33:07,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:33:07,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 167 [2021-11-19 13:33:07,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:07,671 INFO L225 Difference]: With dead ends: 325 [2021-11-19 13:33:07,671 INFO L226 Difference]: Without dead ends: 177 [2021-11-19 13:33:07,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:33:07,673 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 21 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:07,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 766 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:33:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-11-19 13:33:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-11-19 13:33:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 115 states have (on average 1.2173913043478262) internal successors, (140), 117 states have internal predecessors, (140), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 41 states have call predecessors, (45), 40 states have call successors, (45) [2021-11-19 13:33:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 226 transitions. [2021-11-19 13:33:07,690 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 226 transitions. Word has length 167 [2021-11-19 13:33:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:07,690 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 226 transitions. [2021-11-19 13:33:07,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:33:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 226 transitions. [2021-11-19 13:33:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-19 13:33:07,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:07,694 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:07,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:07,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:07,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash -2030398656, now seen corresponding path program 1 times [2021-11-19 13:33:07,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:07,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239752984] [2021-11-19 13:33:07,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:07,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:07,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:07,922 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:07,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 13:33:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:08,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1532 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 13:33:08,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:09,085 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 13:33:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-19 13:33:10,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:10,927 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 13:33:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2021-11-19 13:33:11,175 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:11,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239752984] [2021-11-19 13:33:11,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239752984] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:11,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:33:11,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-19 13:33:11,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400680014] [2021-11-19 13:33:11,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:11,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:33:11,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:33:11,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:33:11,177 INFO L87 Difference]: Start difference. First operand 177 states and 226 transitions. Second operand has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-19 13:33:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:11,759 INFO L93 Difference]: Finished difference Result 336 states and 429 transitions. [2021-11-19 13:33:11,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:33:11,762 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) Word has length 173 [2021-11-19 13:33:11,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:11,764 INFO L225 Difference]: With dead ends: 336 [2021-11-19 13:33:11,764 INFO L226 Difference]: Without dead ends: 180 [2021-11-19 13:33:11,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 330 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:33:11,766 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 23 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:11,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 949 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 42 Unchecked, 0.5s Time] [2021-11-19 13:33:11,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-19 13:33:11,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-19 13:33:11,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 119 states have internal predecessors, (142), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (46), 41 states have call predecessors, (46), 41 states have call successors, (46) [2021-11-19 13:33:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 230 transitions. [2021-11-19 13:33:11,781 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 230 transitions. Word has length 173 [2021-11-19 13:33:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:11,782 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 230 transitions. [2021-11-19 13:33:11,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (30), 3 states have call predecessors, (30), 5 states have return successors, (27), 5 states have call predecessors, (27), 5 states have call successors, (27) [2021-11-19 13:33:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 230 transitions. [2021-11-19 13:33:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-19 13:33:11,785 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:11,786 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:11,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:12,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:12,007 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:12,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:12,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2133509734, now seen corresponding path program 1 times [2021-11-19 13:33:12,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:12,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898092111] [2021-11-19 13:33:12,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:12,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:12,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:12,010 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:12,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 13:33:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:13,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:33:13,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 13:33:13,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:13,947 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 17 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-19 13:33:13,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:13,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898092111] [2021-11-19 13:33:13,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898092111] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:33:13,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-19 13:33:13,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007465932] [2021-11-19 13:33:13,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:13,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:33:13,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:13,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:33:13,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:33:13,949 INFO L87 Difference]: Start difference. First operand 180 states and 230 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:33:14,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:14,155 INFO L93 Difference]: Finished difference Result 288 states and 374 transitions. [2021-11-19 13:33:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:33:14,157 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 178 [2021-11-19 13:33:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:14,159 INFO L225 Difference]: With dead ends: 288 [2021-11-19 13:33:14,160 INFO L226 Difference]: Without dead ends: 178 [2021-11-19 13:33:14,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:33:14,161 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 941 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:14,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 941 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:33:14,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-19 13:33:14,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2021-11-19 13:33:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 114 states have internal predecessors, (136), 42 states have call successors, (42), 19 states have call predecessors, (42), 18 states have return successors, (44), 40 states have call predecessors, (44), 41 states have call successors, (44) [2021-11-19 13:33:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 222 transitions. [2021-11-19 13:33:14,176 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 222 transitions. Word has length 178 [2021-11-19 13:33:14,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:14,176 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 222 transitions. [2021-11-19 13:33:14,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:33:14,177 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 222 transitions. [2021-11-19 13:33:14,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-19 13:33:14,180 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:14,180 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:14,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:14,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:14,397 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:14,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash 342535469, now seen corresponding path program 1 times [2021-11-19 13:33:14,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:14,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321464543] [2021-11-19 13:33:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:14,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:14,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:14,401 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:14,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 13:33:15,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:15,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:33:15,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:15,940 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-19 13:33:15,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:16,470 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-11-19 13:33:16,471 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:16,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321464543] [2021-11-19 13:33:16,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321464543] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:16,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:33:16,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 13:33:16,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164147038] [2021-11-19 13:33:16,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:16,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:33:16,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:33:16,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:16,474 INFO L87 Difference]: Start difference. First operand 174 states and 222 transitions. Second operand has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 13:33:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:16,681 INFO L93 Difference]: Finished difference Result 277 states and 361 transitions. [2021-11-19 13:33:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:33:16,683 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 183 [2021-11-19 13:33:16,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:16,688 INFO L225 Difference]: With dead ends: 277 [2021-11-19 13:33:16,689 INFO L226 Difference]: Without dead ends: 180 [2021-11-19 13:33:16,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:33:16,691 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 2 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:16,691 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1126 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:33:16,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-19 13:33:16,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2021-11-19 13:33:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 120 states have internal predecessors, (140), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (49), 40 states have call predecessors, (49), 41 states have call successors, (49) [2021-11-19 13:33:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 231 transitions. [2021-11-19 13:33:16,714 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 231 transitions. Word has length 183 [2021-11-19 13:33:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:16,716 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 231 transitions. [2021-11-19 13:33:16,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 13:33:16,717 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 231 transitions. [2021-11-19 13:33:16,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-11-19 13:33:16,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:16,720 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:16,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:16,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:16,936 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:16,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:16,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2066741123, now seen corresponding path program 1 times [2021-11-19 13:33:16,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:16,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771026930] [2021-11-19 13:33:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:16,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:16,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:16,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:16,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 13:33:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:18,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 1610 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 13:33:18,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:19,350 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 13:33:19,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:20,253 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2021-11-19 13:33:20,253 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:20,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771026930] [2021-11-19 13:33:20,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771026930] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:33:20,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:33:20,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2021-11-19 13:33:20,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130589224] [2021-11-19 13:33:20,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:20,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:20,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:20,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:20,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:33:20,255 INFO L87 Difference]: Start difference. First operand 180 states and 231 transitions. Second operand has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:33:22,348 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:24,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:27,022 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:29,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:33:30,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:30,286 INFO L93 Difference]: Finished difference Result 287 states and 381 transitions. [2021-11-19 13:33:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:33:30,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 189 [2021-11-19 13:33:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:30,291 INFO L225 Difference]: With dead ends: 287 [2021-11-19 13:33:30,291 INFO L226 Difference]: Without dead ends: 182 [2021-11-19 13:33:30,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:33:30,293 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 7 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:30,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 899 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 2 Unknown, 64 Unchecked, 9.8s Time] [2021-11-19 13:33:30,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-19 13:33:30,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 179. [2021-11-19 13:33:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 117 states have (on average 1.1965811965811965) internal successors, (140), 119 states have internal predecessors, (140), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-19 13:33:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 229 transitions. [2021-11-19 13:33:30,307 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 229 transitions. Word has length 189 [2021-11-19 13:33:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:30,308 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 229 transitions. [2021-11-19 13:33:30,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:33:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 229 transitions. [2021-11-19 13:33:30,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-11-19 13:33:30,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:30,311 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:30,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:30,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:30,527 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:30,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:30,527 INFO L85 PathProgramCache]: Analyzing trace with hash 752486313, now seen corresponding path program 2 times [2021-11-19 13:33:30,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:30,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949865330] [2021-11-19 13:33:30,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:33:30,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:30,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:30,534 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:30,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 13:33:43,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:33:43,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:33:43,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:33:43,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:44,180 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:33:44,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:44,673 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-19 13:33:44,673 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:44,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949865330] [2021-11-19 13:33:44,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949865330] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:44,674 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:44,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 13:33:44,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972760526] [2021-11-19 13:33:44,675 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:44,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:33:44,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:44,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:33:44,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:33:44,678 INFO L87 Difference]: Start difference. First operand 179 states and 229 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 13:33:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:44,756 INFO L93 Difference]: Finished difference Result 283 states and 367 transitions. [2021-11-19 13:33:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:33:44,762 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 194 [2021-11-19 13:33:44,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:44,764 INFO L225 Difference]: With dead ends: 283 [2021-11-19 13:33:44,764 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 13:33:44,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:33:44,765 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 6 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:44,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 404 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:33:44,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 13:33:44,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-19 13:33:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 121 states have internal predecessors, (142), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2021-11-19 13:33:44,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 231 transitions. [2021-11-19 13:33:44,778 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 231 transitions. Word has length 194 [2021-11-19 13:33:44,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:44,779 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 231 transitions. [2021-11-19 13:33:44,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-19 13:33:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 231 transitions. [2021-11-19 13:33:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-11-19 13:33:44,782 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:44,782 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:44,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:44,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:44,996 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1157214473, now seen corresponding path program 1 times [2021-11-19 13:33:44,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:44,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515493791] [2021-11-19 13:33:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:44,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:44,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:45,000 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:45,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 13:33:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:46,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:33:46,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:46,623 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:33:46,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:47,269 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-19 13:33:47,269 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:47,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515493791] [2021-11-19 13:33:47,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515493791] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:33:47,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1422409873] [2021-11-19 13:33:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:47,269 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:33:47,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:33:47,272 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:33:47,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-19 13:33:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:47,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:33:47,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:48,394 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 13:33:48,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-11-19 13:33:48,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1422409873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:48,899 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:33:48,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6] total 16 [2021-11-19 13:33:48,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742936695] [2021-11-19 13:33:48,900 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:48,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:48,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:48,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:48,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:33:48,902 INFO L87 Difference]: Start difference. First operand 181 states and 231 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:33:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:49,128 INFO L93 Difference]: Finished difference Result 267 states and 345 transitions. [2021-11-19 13:33:49,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:33:49,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 196 [2021-11-19 13:33:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:49,133 INFO L225 Difference]: With dead ends: 267 [2021-11-19 13:33:49,133 INFO L226 Difference]: Without dead ends: 181 [2021-11-19 13:33:49,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 781 GetRequests, 766 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:33:49,135 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 2 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:49,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1126 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:33:49,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-19 13:33:49,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-11-19 13:33:49,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 121 states have internal predecessors, (142), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (46), 40 states have call predecessors, (46), 40 states have call successors, (46) [2021-11-19 13:33:49,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 229 transitions. [2021-11-19 13:33:49,148 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 229 transitions. Word has length 196 [2021-11-19 13:33:49,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:49,149 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 229 transitions. [2021-11-19 13:33:49,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 13:33:49,149 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 229 transitions. [2021-11-19 13:33:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-19 13:33:49,151 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:49,152 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:33:49,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:49,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 13:33:49,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:33:49,557 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:33:49,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:49,557 INFO L85 PathProgramCache]: Analyzing trace with hash -335095727, now seen corresponding path program 1 times [2021-11-19 13:33:49,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:33:49,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572603417] [2021-11-19 13:33:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:49,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:33:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:33:49,561 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:33:49,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 13:33:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:50,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:33:50,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:51,320 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:33:51,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:33:51,986 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:33:51,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572603417] [2021-11-19 13:33:51,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572603417] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:33:51,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1777352284] [2021-11-19 13:33:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:51,987 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:33:51,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:33:51,988 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:33:52,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-19 13:33:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:52,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:33:52,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:33:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-19 13:33:53,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:33:54,020 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2021-11-19 13:33:54,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1777352284] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:54,020 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:33:54,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6, 6] total 16 [2021-11-19 13:33:54,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029955246] [2021-11-19 13:33:54,020 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:54,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:54,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:33:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:33:54,022 INFO L87 Difference]: Start difference. First operand 181 states and 229 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 13:33:59,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:34:00,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:00,435 INFO L93 Difference]: Finished difference Result 262 states and 336 transitions. [2021-11-19 13:34:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:34:00,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 207 [2021-11-19 13:34:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:00,438 INFO L225 Difference]: With dead ends: 262 [2021-11-19 13:34:00,438 INFO L226 Difference]: Without dead ends: 183 [2021-11-19 13:34:00,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:34:00,440 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 46 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:00,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 1028 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-11-19 13:34:00,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-19 13:34:00,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-19 13:34:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 123 states have internal predecessors, (143), 41 states have call successors, (41), 19 states have call predecessors, (41), 21 states have return successors, (47), 40 states have call predecessors, (47), 40 states have call successors, (47) [2021-11-19 13:34:00,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 231 transitions. [2021-11-19 13:34:00,453 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 231 transitions. Word has length 207 [2021-11-19 13:34:00,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:00,454 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 231 transitions. [2021-11-19 13:34:00,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 7 states have internal predecessors, (71), 4 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2021-11-19 13:34:00,454 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 231 transitions. [2021-11-19 13:34:00,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-11-19 13:34:00,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:00,456 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:00,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:00,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:00,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:34:00,861 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:00,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1566771569, now seen corresponding path program 1 times [2021-11-19 13:34:00,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:00,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594131752] [2021-11-19 13:34:00,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:00,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:00,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:00,865 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:00,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 13:34:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:02,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:34:02,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:02,603 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:34:02,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:03,226 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:34:03,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:03,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594131752] [2021-11-19 13:34:03,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594131752] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:03,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1603183319] [2021-11-19 13:34:03,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:03,227 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:34:03,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:34:03,231 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:34:03,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 13:34:06,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:06,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 13:34:06,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:34:06,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:07,092 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:34:07,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1603183319] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:07,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518530250] [2021-11-19 13:34:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:07,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:07,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:07,094 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:07,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 13:34:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:08,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1671 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:34:08,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:08,689 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:34:08,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:09,369 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:34:09,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518530250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:09,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:34:09,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-19 13:34:09,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244536643] [2021-11-19 13:34:09,371 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:34:09,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 13:34:09,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:34:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 13:34:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:34:09,373 INFO L87 Difference]: Start difference. First operand 183 states and 231 transitions. Second operand has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 13:34:09,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:09,869 INFO L93 Difference]: Finished difference Result 291 states and 373 transitions. [2021-11-19 13:34:09,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:34:09,871 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 208 [2021-11-19 13:34:09,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:09,874 INFO L225 Difference]: With dead ends: 291 [2021-11-19 13:34:09,874 INFO L226 Difference]: Without dead ends: 187 [2021-11-19 13:34:09,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1246 GetRequests, 1230 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=184, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:34:09,876 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 19 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:09,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 996 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:09,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-11-19 13:34:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2021-11-19 13:34:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 124 states have (on average 1.185483870967742) internal successors, (147), 127 states have internal predecessors, (147), 41 states have call successors, (41), 19 states have call predecessors, (41), 21 states have return successors, (47), 40 states have call predecessors, (47), 40 states have call successors, (47) [2021-11-19 13:34:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 235 transitions. [2021-11-19 13:34:09,889 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 235 transitions. Word has length 208 [2021-11-19 13:34:09,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:09,890 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 235 transitions. [2021-11-19 13:34:09,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 13:34:09,890 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 235 transitions. [2021-11-19 13:34:09,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-19 13:34:09,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:09,892 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:34:09,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:10,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:10,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-19 13:34:10,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:10,519 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:34:10,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:10,519 INFO L85 PathProgramCache]: Analyzing trace with hash -2125881009, now seen corresponding path program 2 times [2021-11-19 13:34:10,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:34:10,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966055377] [2021-11-19 13:34:10,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:34:10,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:34:10,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:34:10,523 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:34:10,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 13:34:20,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:34:20,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:20,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1691 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:34:20,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 95 proven. 21 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:34:20,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:34:21,804 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:34:21,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966055377] [2021-11-19 13:34:21,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966055377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:21,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1781580810] [2021-11-19 13:34:21,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:34:21,804 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:34:21,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:34:21,805 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:34:21,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 13:34:57,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:34:57,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:34:57,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 1691 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 13:34:57,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:34:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 95 proven. 21 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:34:57,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:34:58,068 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:34:58,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1781580810] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:34:58,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289235656] [2021-11-19 13:34:58,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:34:58,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:34:58,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:34:58,078 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:34:58,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-19 13:35:47,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:35:47,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:35:47,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1691 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 13:35:47,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:35:47,889 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 95 proven. 21 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:35:47,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:35:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:35:49,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289235656] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:35:49,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:35:49,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 10] total 26 [2021-11-19 13:35:49,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347266877] [2021-11-19 13:35:49,117 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:35:49,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-19 13:35:49,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:35:49,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 13:35:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:35:49,120 INFO L87 Difference]: Start difference. First operand 187 states and 235 transitions. Second operand has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 13:35:51,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:51,267 INFO L93 Difference]: Finished difference Result 299 states and 385 transitions. [2021-11-19 13:35:51,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 13:35:51,268 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 212 [2021-11-19 13:35:51,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:51,271 INFO L225 Difference]: With dead ends: 299 [2021-11-19 13:35:51,271 INFO L226 Difference]: Without dead ends: 195 [2021-11-19 13:35:51,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1242 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 13:35:51,273 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 45 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2386 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:51,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2386 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:35:51,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-19 13:35:51,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-11-19 13:35:51,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 132 states have (on average 1.1742424242424243) internal successors, (155), 135 states have internal predecessors, (155), 41 states have call successors, (41), 19 states have call predecessors, (41), 21 states have return successors, (47), 40 states have call predecessors, (47), 40 states have call successors, (47) [2021-11-19 13:35:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 243 transitions. [2021-11-19 13:35:51,286 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 243 transitions. Word has length 212 [2021-11-19 13:35:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:51,287 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 243 transitions. [2021-11-19 13:35:51,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 2 states have call successors, (34), 2 states have call predecessors, (34), 5 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-19 13:35:51,288 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 243 transitions. [2021-11-19 13:35:51,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-19 13:35:51,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:51,290 INFO L514 BasicCegarLoop]: trace histogram [14, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:35:51,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:51,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-11-19 13:35:51,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-19 13:35:51,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 13:35:51,911 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:35:51,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:51,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1478961457, now seen corresponding path program 3 times [2021-11-19 13:35:51,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:35:51,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161142911] [2021-11-19 13:35:51,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:35:51,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:35:51,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:35:51,915 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:35:51,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 13:36:04,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 13:36:04,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:36:05,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 13:36:05,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:15,123 WARN L227 SmtUtils]: Spent 9.09s on a formula simplification. DAG size of input: 262 DAG size of output: 17 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:36:15,124 INFO L354 Elim1Store]: treesize reduction 2499, result has 1.0 percent of original size [2021-11-19 13:36:15,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 10 case distinctions, treesize of input 334 treesize of output 249 [2021-11-19 13:36:16,375 INFO L354 Elim1Store]: treesize reduction 669, result has 3.7 percent of original size [2021-11-19 13:36:16,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 246 treesize of output 203 [2021-11-19 13:36:17,151 INFO L354 Elim1Store]: treesize reduction 2499, result has 1.0 percent of original size [2021-11-19 13:36:17,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 10 case distinctions, treesize of input 194 treesize of output 109 [2021-11-19 13:36:17,321 INFO L354 Elim1Store]: treesize reduction 669, result has 3.7 percent of original size [2021-11-19 13:36:17,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 106 treesize of output 63 [2021-11-19 13:36:18,754 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-11-19 13:36:18,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:19,211 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,213 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 532 [2021-11-19 13:36:19,221 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 739 [2021-11-19 13:36:19,307 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,308 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 226 [2021-11-19 13:36:19,313 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:36:19,316 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 739 [2021-11-19 13:36:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-11-19 13:36:20,812 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:20,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161142911] [2021-11-19 13:36:20,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161142911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:20,813 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:36:20,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 9] imperfect sequences [] total 18 [2021-11-19 13:36:20,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423830733] [2021-11-19 13:36:20,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:20,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 13:36:20,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:20,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 13:36:20,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:36:20,816 INFO L87 Difference]: Start difference. First operand 195 states and 243 transitions. Second operand has 18 states, 15 states have (on average 6.2) internal successors, (93), 17 states have internal predecessors, (93), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (30), 5 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-19 13:36:22,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:24,905 WARN L515 Checker$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 13:36:28,560 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:32,526 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:34,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:36,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 13:36:37,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:37,166 INFO L93 Difference]: Finished difference Result 300 states and 380 transitions. [2021-11-19 13:36:37,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 13:36:37,169 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.2) internal successors, (93), 17 states have internal predecessors, (93), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (30), 5 states have call predecessors, (30), 7 states have call successors, (30) Word has length 220 [2021-11-19 13:36:37,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:37,171 INFO L225 Difference]: With dead ends: 300 [2021-11-19 13:36:37,171 INFO L226 Difference]: Without dead ends: 217 [2021-11-19 13:36:37,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 420 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:36:37,173 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 29 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 233 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:37,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2463 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 190 Invalid, 2 Unknown, 233 Unchecked, 16.2s Time] [2021-11-19 13:36:37,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-11-19 13:36:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 211. [2021-11-19 13:36:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 144 states have (on average 1.1805555555555556) internal successors, (170), 147 states have internal predecessors, (170), 43 states have call successors, (43), 21 states have call predecessors, (43), 23 states have return successors, (52), 42 states have call predecessors, (52), 42 states have call successors, (52) [2021-11-19 13:36:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 265 transitions. [2021-11-19 13:36:37,189 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 265 transitions. Word has length 220 [2021-11-19 13:36:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:37,190 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 265 transitions. [2021-11-19 13:36:37,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.2) internal successors, (93), 17 states have internal predecessors, (93), 8 states have call successors, (33), 4 states have call predecessors, (33), 6 states have return successors, (30), 5 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-19 13:36:37,191 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 265 transitions. [2021-11-19 13:36:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-19 13:36:37,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:37,193 INFO L514 BasicCegarLoop]: trace histogram [14, 9, 9, 9, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:37,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-19 13:36:37,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:36:37,399 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:36:37,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:37,399 INFO L85 PathProgramCache]: Analyzing trace with hash -346051265, now seen corresponding path program 1 times [2021-11-19 13:36:37,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:37,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515596911] [2021-11-19 13:36:37,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:37,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:37,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:37,403 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:37,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 13:36:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:38,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:36:38,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 82 proven. 105 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:36:39,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:42,267 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-19 13:36:42,267 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:42,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515596911] [2021-11-19 13:36:42,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515596911] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:42,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1958168397] [2021-11-19 13:36:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:42,267 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:42,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:42,268 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:42,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-19 13:36:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:42,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 1711 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 13:36:43,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2021-11-19 13:36:43,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:43,984 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-11-19 13:36:43,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1958168397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:43,984 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 13:36:43,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [18, 18] total 36 [2021-11-19 13:36:43,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882142129] [2021-11-19 13:36:43,985 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:43,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 13:36:43,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:36:43,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 13:36:43,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=935, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 13:36:43,987 INFO L87 Difference]: Start difference. First operand 211 states and 265 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 13:36:44,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:44,127 INFO L93 Difference]: Finished difference Result 334 states and 424 transitions. [2021-11-19 13:36:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:36:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 215 [2021-11-19 13:36:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:44,133 INFO L225 Difference]: With dead ends: 334 [2021-11-19 13:36:44,134 INFO L226 Difference]: Without dead ends: 197 [2021-11-19 13:36:44,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 858 GetRequests, 823 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:36:44,137 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 2 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:44,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 596 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:36:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-19 13:36:44,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-11-19 13:36:44,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 134 states have (on average 1.164179104477612) internal successors, (156), 137 states have internal predecessors, (156), 40 states have call successors, (40), 20 states have call predecessors, (40), 22 states have return successors, (45), 39 states have call predecessors, (45), 39 states have call successors, (45) [2021-11-19 13:36:44,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 241 transitions. [2021-11-19 13:36:44,153 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 241 transitions. Word has length 215 [2021-11-19 13:36:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:44,154 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 241 transitions. [2021-11-19 13:36:44,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 13:36:44,155 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 241 transitions. [2021-11-19 13:36:44,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-11-19 13:36:44,157 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:44,158 INFO L514 BasicCegarLoop]: trace histogram [14, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:36:44,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:44,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 13:36:44,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:36:44,571 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:36:44,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:44,572 INFO L85 PathProgramCache]: Analyzing trace with hash -494166666, now seen corresponding path program 1 times [2021-11-19 13:36:44,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:36:44,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228564998] [2021-11-19 13:36:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:44,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:36:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:36:44,580 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:36:44,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 13:36:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:46,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:36:46,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:46,894 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 95 proven. 105 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:36:46,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:49,390 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:36:49,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:36:49,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228564998] [2021-11-19 13:36:49,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228564998] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:49,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1975364457] [2021-11-19 13:36:49,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:49,391 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:36:49,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:36:49,391 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:36:49,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-19 13:36:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:52,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-19 13:36:52,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 95 proven. 105 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:36:53,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:36:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:36:54,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1975364457] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:36:54,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069753189] [2021-11-19 13:36:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:54,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:36:54,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:36:54,022 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:36:54,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-19 13:36:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:55,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1739 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 13:36:55,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:36:56,024 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 95 proven. 105 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:36:56,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:00,138 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:37:00,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069753189] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:00,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:37:00,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 50 [2021-11-19 13:37:00,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902804275] [2021-11-19 13:37:00,139 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:37:00,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-19 13:37:00,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:37:00,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-19 13:37:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=757, Invalid=1693, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 13:37:00,143 INFO L87 Difference]: Start difference. First operand 197 states and 241 transitions. Second operand has 50 states, 50 states have (on average 2.94) internal successors, (147), 50 states have internal predecessors, (147), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 13:37:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:11,401 INFO L93 Difference]: Finished difference Result 319 states and 406 transitions. [2021-11-19 13:37:11,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-19 13:37:11,404 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.94) internal successors, (147), 50 states have internal predecessors, (147), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 224 [2021-11-19 13:37:11,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:11,406 INFO L225 Difference]: With dead ends: 319 [2021-11-19 13:37:11,407 INFO L226 Difference]: Without dead ends: 213 [2021-11-19 13:37:11,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1354 GetRequests, 1290 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=1454, Invalid=2836, Unknown=0, NotChecked=0, Total=4290 [2021-11-19 13:37:11,411 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 177 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 4351 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:11,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 4351 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 13:37:11,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-19 13:37:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-11-19 13:37:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 150 states have (on average 1.1466666666666667) internal successors, (172), 153 states have internal predecessors, (172), 40 states have call successors, (40), 20 states have call predecessors, (40), 22 states have return successors, (45), 39 states have call predecessors, (45), 39 states have call successors, (45) [2021-11-19 13:37:11,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 257 transitions. [2021-11-19 13:37:11,434 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 257 transitions. Word has length 224 [2021-11-19 13:37:11,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:11,437 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 257 transitions. [2021-11-19 13:37:11,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.94) internal successors, (147), 50 states have internal predecessors, (147), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 13:37:11,437 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 257 transitions. [2021-11-19 13:37:11,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-19 13:37:11,440 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:11,440 INFO L514 BasicCegarLoop]: trace histogram [30, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:37:11,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (26)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:11,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:11,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 13:37:12,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:37:12,055 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:37:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1288964214, now seen corresponding path program 2 times [2021-11-19 13:37:12,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:37:12,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244813925] [2021-11-19 13:37:12,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:37:12,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:37:12,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:37:12,060 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:37:12,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 13:37:17,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:37:17,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:37:17,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 13:37:17,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:37:19,834 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 95 proven. 465 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:37:19,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:37:28,283 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:37:28,283 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:37:28,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244813925] [2021-11-19 13:37:28,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244813925] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:37:28,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [291394495] [2021-11-19 13:37:28,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:37:28,284 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 13:37:28,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 13:37:28,285 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 13:37:28,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 13:38:54,161 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:38:54,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:38:54,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-19 13:38:54,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:38:54,805 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 95 proven. 465 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:38:54,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:38:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:38:56,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [291394495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:38:56,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213711914] [2021-11-19 13:38:56,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 13:38:56,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:38:56,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:38:56,671 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 13:38:56,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-19 13:39:55,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 13:39:55,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:39:55,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-19 13:39:55,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:39:56,409 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 95 proven. 465 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-11-19 13:39:56,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:40:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-11-19 13:40:10,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213711914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 13:40:10,023 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 13:40:10,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34, 34, 34, 34] total 98 [2021-11-19 13:40:10,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62809009] [2021-11-19 13:40:10,024 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 13:40:10,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-19 13:40:10,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:40:10,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-19 13:40:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2797, Invalid=6709, Unknown=0, NotChecked=0, Total=9506 [2021-11-19 13:40:10,031 INFO L87 Difference]: Start difference. First operand 213 states and 257 transitions. Second operand has 98 states, 98 states have (on average 1.989795918367347) internal successors, (195), 98 states have internal predecessors, (195), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 13:41:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:41:08,531 INFO L93 Difference]: Finished difference Result 351 states and 454 transitions. [2021-11-19 13:41:08,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-19 13:41:08,532 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 1.989795918367347) internal successors, (195), 98 states have internal predecessors, (195), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) Word has length 240 [2021-11-19 13:41:08,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:41:08,534 INFO L225 Difference]: With dead ends: 351 [2021-11-19 13:41:08,534 INFO L226 Difference]: Without dead ends: 245 [2021-11-19 13:41:08,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1338 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1333 ImplicationChecksByTransitivity, 73.2s TimeCoverageRelationStatistics Valid=5470, Invalid=11300, Unknown=0, NotChecked=0, Total=16770 [2021-11-19 13:41:08,542 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 614 mSDsluCounter, 6533 mSDsCounter, 0 mSdLazyCounter, 1232 mSolverCounterSat, 654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 6732 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 654 IncrementalHoareTripleChecker+Valid, 1232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:41:08,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 6732 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [654 Valid, 1232 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 13:41:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-19 13:41:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-11-19 13:41:08,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 182 states have (on average 1.120879120879121) internal successors, (204), 185 states have internal predecessors, (204), 40 states have call successors, (40), 20 states have call predecessors, (40), 22 states have return successors, (45), 39 states have call predecessors, (45), 39 states have call successors, (45) [2021-11-19 13:41:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 289 transitions. [2021-11-19 13:41:08,558 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 289 transitions. Word has length 240 [2021-11-19 13:41:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:08,559 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 289 transitions. [2021-11-19 13:41:08,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 1.989795918367347) internal successors, (195), 98 states have internal predecessors, (195), 2 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (35), 2 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-19 13:41:08,559 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 289 transitions. [2021-11-19 13:41:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-19 13:41:08,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:08,562 INFO L514 BasicCegarLoop]: trace histogram [62, 9, 9, 9, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:41:08,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:08,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-19 13:41:09,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-19 13:41:09,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 13:41:09,179 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:41:09,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:09,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1664950666, now seen corresponding path program 3 times [2021-11-19 13:41:09,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:41:09,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1085704428] [2021-11-19 13:41:09,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 13:41:09,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:41:09,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:41:09,183 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:41:09,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_724abb6e-9222-4ee4-89d2-0ea8aa7dab79/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 13:42:03,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-19 13:42:03,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 13:42:06,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-19 13:42:06,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:42:07,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 7 [2021-11-19 13:42:07,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:07,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 99 treesize of output 7 [2021-11-19 13:42:08,258 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:08,260 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 764 [2021-11-19 13:42:08,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:42:08,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1191 [2021-11-19 13:42:28,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,075 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:42:29,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,532 WARN L227 SmtUtils]: Spent 36.28s on a formula simplification. DAG size of input: 210 DAG size of output: 97 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 13:43:05,534 INFO L354 Elim1Store]: treesize reduction 2512, result has 9.1 percent of original size [2021-11-19 13:43:05,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 105 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 242 treesize of output 473 [2021-11-19 13:43:05,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:05,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-19 13:43:08,195 INFO L354 Elim1Store]: treesize reduction 2512, result has 9.1 percent of original size [2021-11-19 13:43:08,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 105 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 392 treesize of output 623 [2021-11-19 13:43:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2185 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 2137 trivial. 0 not checked. [2021-11-19 13:43:28,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:43:52,892 WARN L227 SmtUtils]: Spent 20.72s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:44:09,849 WARN L227 SmtUtils]: Spent 16.96s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:44:31,265 WARN L227 SmtUtils]: Spent 21.41s on a formula simplification that was a NOOP. DAG size: 137 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:45:04,892 WARN L227 SmtUtils]: Spent 33.63s on a formula simplification that was a NOOP. DAG size: 133 (called from [L 268] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 13:45:04,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:45:04,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 790 [2021-11-19 13:45:04,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:45:04,927 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1027 [2021-11-19 13:45:04,942 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:45:04,944 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1084 [2021-11-19 13:45:04,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:45:04,965 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1697 [2021-11-19 13:45:07,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:45:07,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 790 [2021-11-19 13:45:07,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:45:07,278 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1032 [2021-11-19 13:45:07,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:45:07,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1094 [2021-11-19 13:45:07,312 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 13:45:07,315 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1707 [2021-11-19 13:45:38,662 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_68 (_ BitVec 64)) (v_DerPreprocessor_69 (_ BitVec 64)) (v_DerPreprocessor_88 (_ BitVec 64)) (v_DerPreprocessor_66 (_ BitVec 64)) (s_get_next_element_~entry~7.offset (_ BitVec 64)) (v_DerPreprocessor_67 (_ BitVec 64)) (v_s_get_next_element_~iter.base_BEFORE_CALL_19 (_ BitVec 64)) (v_DerPreprocessor_82 (_ BitVec 64)) (v_DerPreprocessor_83 (_ BitVec 64)) (v_DerPreprocessor_80 (_ BitVec 64)) (v_DerPreprocessor_81 (_ BitVec 64)) (v_DerPreprocessor_86 (_ BitVec 64)) (v_DerPreprocessor_87 (_ BitVec 64)) (v_DerPreprocessor_65 (_ BitVec 64)) (v_s_get_next_element_~iter.offset_BEFORE_CALL_11 (_ BitVec 64)) (v_DerPreprocessor_84 (_ BitVec 64)) (v_DerPreprocessor_85 (_ BitVec 64)) (s_get_next_element_~entry~7.base (_ BitVec 64)) (v_DerPreprocessor_79 (_ BitVec 64)) (v_DerPreprocessor_77 (_ BitVec 64)) (|v_s_get_next_element_#in~iter.offset_BEFORE_CALL_5| (_ BitVec 64)) (v_DerPreprocessor_78 (_ BitVec 64)) (|v_s_get_next_element_#in~iter.base_BEFORE_CALL_5| (_ BitVec 64)) (v_DerPreprocessor_71 (_ BitVec 64)) (v_DerPreprocessor_72 (_ BitVec 64)) (v_DerPreprocessor_70 (_ BitVec 64)) (v_DerPreprocessor_75 (_ BitVec 64)) (v_DerPreprocessor_76 (_ BitVec 64)) (v_DerPreprocessor_73 (_ BitVec 64)) (v_DerPreprocessor_74 (_ BitVec 64))) (let ((.cse17 (bvadd (_ bv8 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse19 (bvadd (_ bv16 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse20 (bvadd (_ bv8 64) s_get_next_element_~entry~7.offset)) (.cse21 (bvadd (_ bv24 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse22 (bvadd (_ bv25 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse23 (bvadd (_ bv26 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse24 (bvadd (_ bv27 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse25 (bvadd (_ bv28 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse26 (bvadd (_ bv29 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse27 (bvadd (_ bv30 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse28 (bvadd (_ bv31 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse29 (bvadd (_ bv40 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse30 (bvadd (_ bv41 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse31 (bvadd (_ bv42 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse32 (bvadd (_ bv43 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11))) (or (and (or (not (= (_ bv0 64) |c_aws_hash_table_is_valid_#in~map.base|)) (not (= (_ bv0 64) |c_aws_hash_table_is_valid_#in~map.offset|))) (exists ((v_DerPreprocessor_68 (_ BitVec 64)) (v_DerPreprocessor_69 (_ BitVec 64)) (v_DerPreprocessor_88 (_ BitVec 64)) (v_DerPreprocessor_66 (_ BitVec 64)) (s_get_next_element_~entry~7.offset (_ BitVec 64)) (v_DerPreprocessor_67 (_ BitVec 64)) (v_DerPreprocessor_82 (_ BitVec 64)) (v_DerPreprocessor_83 (_ BitVec 64)) (v_DerPreprocessor_80 (_ BitVec 64)) (v_DerPreprocessor_81 (_ BitVec 64)) (v_DerPreprocessor_86 (_ BitVec 64)) (v_DerPreprocessor_87 (_ BitVec 64)) (v_DerPreprocessor_65 (_ BitVec 64)) (v_DerPreprocessor_84 (_ BitVec 64)) (v_DerPreprocessor_85 (_ BitVec 64)) (s_get_next_element_~entry~7.base (_ BitVec 64)) (v_DerPreprocessor_79 (_ BitVec 64)) (v_DerPreprocessor_77 (_ BitVec 64)) (v_DerPreprocessor_78 (_ BitVec 64)) (v_DerPreprocessor_71 (_ BitVec 64)) (v_DerPreprocessor_72 (_ BitVec 64)) (v_DerPreprocessor_70 (_ BitVec 64)) (v_DerPreprocessor_75 (_ BitVec 64)) (v_DerPreprocessor_76 (_ BitVec 64)) (v_DerPreprocessor_73 (_ BitVec 64)) (v_DerPreprocessor_74 (_ BitVec 64))) (let ((.cse0 (bvadd (_ bv8 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse2 (bvadd (_ bv16 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse3 (bvadd (_ bv8 64) s_get_next_element_~entry~7.offset)) (.cse4 (bvadd (_ bv24 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse5 (bvadd (_ bv25 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse6 (bvadd (_ bv26 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse7 (bvadd (_ bv27 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse8 (bvadd (_ bv28 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse9 (bvadd (_ bv29 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse10 (bvadd (_ bv30 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse11 (bvadd (_ bv31 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse12 (bvadd (_ bv40 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse13 (bvadd (_ bv41 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse14 (bvadd (_ bv42 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11)) (.cse15 (bvadd (_ bv43 64) v_s_get_next_element_~iter.offset_BEFORE_CALL_11))) (and (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_19 (store (store (store (store (store (store (store (store (store (store (store (store (let ((.cse1 (select |c_#memory_$Pointer$.base| s_get_next_element_~entry~7.base))) (store (store (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_19) .cse0 (select .cse1 s_get_next_element_~entry~7.offset)) .cse2 (select .cse1 .cse3))) .cse4 v_DerPreprocessor_65) .cse5 v_DerPreprocessor_66) .cse6 v_DerPreprocessor_67) .cse7 v_DerPreprocessor_68) .cse8 v_DerPreprocessor_69) .cse9 v_DerPreprocessor_70) .cse10 v_DerPreprocessor_71) .cse11 v_DerPreprocessor_72) .cse12 v_DerPreprocessor_73) .cse13 v_DerPreprocessor_74) .cse14 v_DerPreprocessor_75) .cse15 v_DerPreprocessor_76)) |v_s_get_next_element_#in~iter.base_BEFORE_CALL_5|) |v_s_get_next_element_#in~iter.offset_BEFORE_CALL_5|)) (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_19 (store (store (store (store (store (store (store (store (store (store (store (store (let ((.cse16 (select |c_#memory_$Pointer$.offset| s_get_next_element_~entry~7.base))) (store (store (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_19) .cse0 (select .cse16 s_get_next_element_~entry~7.offset)) .cse2 (select .cse16 .cse3))) .cse4 v_DerPreprocessor_81) .cse5 v_DerPreprocessor_82) .cse6 v_DerPreprocessor_83) .cse7 v_DerPreprocessor_84) .cse8 v_DerPreprocessor_85) .cse9 v_DerPreprocessor_86) .cse10 v_DerPreprocessor_87) .cse11 v_DerPreprocessor_88) .cse12 v_DerPreprocessor_77) .cse13 v_DerPreprocessor_78) .cse14 v_DerPreprocessor_79) .cse15 v_DerPreprocessor_80)) |v_s_get_next_element_#in~iter.base_BEFORE_CALL_5|) |v_s_get_next_element_#in~iter.offset_BEFORE_CALL_5|)))))) (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_19 (store (store (store (store (store (store (store (store (store (store (store (store (let ((.cse18 (select |c_#memory_$Pointer$.offset| s_get_next_element_~entry~7.base))) (store (store (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_19) .cse17 (select .cse18 s_get_next_element_~entry~7.offset)) .cse19 (select .cse18 .cse20))) .cse21 v_DerPreprocessor_81) .cse22 v_DerPreprocessor_82) .cse23 v_DerPreprocessor_83) .cse24 v_DerPreprocessor_84) .cse25 v_DerPreprocessor_85) .cse26 v_DerPreprocessor_86) .cse27 v_DerPreprocessor_87) .cse28 v_DerPreprocessor_88) .cse29 v_DerPreprocessor_77) .cse30 v_DerPreprocessor_78) .cse31 v_DerPreprocessor_79) .cse32 v_DerPreprocessor_80)) |v_s_get_next_element_#in~iter.base_BEFORE_CALL_5|) |v_s_get_next_element_#in~iter.offset_BEFORE_CALL_5|))) (not (= (_ bv0 64) (select (select (store |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_19 (store (store (store (store (store (store (store (store (store (store (store (store (let ((.cse33 (select |c_#memory_$Pointer$.base| s_get_next_element_~entry~7.base))) (store (store (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_19) .cse17 (select .cse33 s_get_next_element_~entry~7.offset)) .cse19 (select .cse33 .cse20))) .cse21 v_DerPreprocessor_65) .cse22 v_DerPreprocessor_66) .cse23 v_DerPreprocessor_67) .cse24 v_DerPreprocessor_68) .cse25 v_DerPreprocessor_69) .cse26 v_DerPreprocessor_70) .cse27 v_DerPreprocessor_71) .cse28 v_DerPreprocessor_72) .cse29 v_DerPreprocessor_73) .cse30 v_DerPreprocessor_74) .cse31 v_DerPreprocessor_75) .cse32 v_DerPreprocessor_76)) |v_s_get_next_element_#in~iter.base_BEFORE_CALL_5|) |v_s_get_next_element_#in~iter.offset_BEFORE_CALL_5|)))))) is different from false