./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:12:45,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:12:45,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:12:45,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:12:45,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:12:45,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:12:45,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:12:45,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:12:45,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:12:45,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:12:45,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:12:45,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:12:45,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:12:45,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:12:45,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:12:45,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:12:45,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:12:45,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:12:45,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:12:45,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:12:45,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:12:45,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:12:45,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:12:45,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:12:45,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:12:45,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:12:45,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:12:45,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:12:45,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:12:45,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:12:45,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:12:45,812 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:12:45,814 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:12:45,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:12:45,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:12:45,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:12:45,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:12:45,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:12:45,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:12:45,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:12:45,821 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:12:45,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-12 23:12:45,863 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:12:45,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:12:45,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:12:45,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:12:45,866 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:12:45,866 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:12:45,866 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:12:45,866 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:12:45,873 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:12:45,873 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:12:45,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:12:45,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:12:45,875 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:12:45,875 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:12:45,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:12:45,875 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:12:45,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:12:45,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:12:45,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:12:45,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:12:45,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:12:45,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:12:45,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:12:45,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:12:45,878 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:12:45,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:12:45,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:12:45,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:12:45,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:12:45,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:12:45,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:12:45,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:12:45,882 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:12:45,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:12:45,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:12:45,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:12:45,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:12:45,883 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_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2021-11-12 23:12:46,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:12:46,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:12:46,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:12:46,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:12:46,183 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:12:46,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-12 23:12:46,253 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data/b67dce3bb/685984da83a84453a3a22d352617507d/FLAG8aa0538de [2021-11-12 23:12:47,131 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:12:47,131 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-12 23:12:47,183 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data/b67dce3bb/685984da83a84453a3a22d352617507d/FLAG8aa0538de [2021-11-12 23:12:47,607 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data/b67dce3bb/685984da83a84453a3a22d352617507d [2021-11-12 23:12:47,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:12:47,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:12:47,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:12:47,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:12:47,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:12:47,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:12:47" (1/1) ... [2021-11-12 23:12:47,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4802a02a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:47, skipping insertion in model container [2021-11-12 23:12:47,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:12:47" (1/1) ... [2021-11-12 23:12:47,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:12:47,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:12:48,069 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2021-11-12 23:12:48,077 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2021-11-12 23:12:48,106 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:12:48,113 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:12:49,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,151 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,167 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,168 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,170 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,171 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,173 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:49,674 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:12:49,675 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:12:49,677 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:12:49,678 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:12:49,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:12:49,680 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:12:49,681 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:12:49,682 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:12:49,683 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:12:49,683 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:12:49,897 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:12:50,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,307 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,315 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,347 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,348 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,349 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,349 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,350 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:50,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:12:50,413 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-12 23:12:50,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@483cacd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:50, skipping insertion in model container [2021-11-12 23:12:50,415 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:12:50,416 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:12:50,419 INFO L158 Benchmark]: Toolchain (without parser) took 2806.44ms. Allocated memory is still 121.6MB. Free memory was 79.0MB in the beginning and 64.8MB in the end (delta: 14.1MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2021-11-12 23:12:50,419 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 92.3MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:12:50,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2801.80ms. Allocated memory is still 121.6MB. Free memory was 78.5MB in the beginning and 64.8MB in the end (delta: 13.7MB). Peak memory consumption was 40.4MB. Max. memory is 16.1GB. [2021-11-12 23:12:50,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 92.3MB. Free memory is still 50.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2801.80ms. Allocated memory is still 121.6MB. Free memory was 78.5MB in the beginning and 64.8MB in the end (delta: 13.7MB). Peak memory consumption was 40.4MB. 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_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:12:52,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:12:52,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:12:52,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:12:52,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:12:52,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:12:52,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:12:52,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:12:52,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:12:52,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:12:52,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:12:52,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:12:52,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:12:52,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:12:52,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:12:52,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:12:52,713 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:12:52,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:12:52,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:12:52,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:12:52,720 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:12:52,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:12:52,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:12:52,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:12:52,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:12:52,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:12:52,736 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:12:52,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:12:52,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:12:52,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:12:52,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:12:52,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:12:52,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:12:52,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:12:52,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:12:52,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:12:52,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:12:52,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:12:52,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:12:52,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:12:52,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:12:52,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-12 23:12:52,788 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:12:52,788 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:12:52,789 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:12:52,789 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:12:52,789 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:12:52,790 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:12:52,790 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:12:52,790 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:12:52,790 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:12:52,791 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:12:52,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:12:52,792 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:12:52,792 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:12:52,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:12:52,792 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:12:52,793 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:12:52,793 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:12:52,793 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:12:52,793 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:12:52,794 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:12:52,794 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:12:52,794 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:12:52,794 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:12:52,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:12:52,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:12:52,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:12:52,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:12:52,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:12:52,796 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:12:52,796 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:12:52,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:12:52,796 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:12:52,797 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:12:52,797 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_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edc61b8c285d87a6706f10a0369a5dd380942e398b4b2231a7f494f856622f23 [2021-11-12 23:12:53,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:12:53,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:12:53,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:12:53,168 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:12:53,169 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:12:53,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-12 23:12:53,237 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data/5086e15f9/a42c084c0d124acfb11843044db3e6e2/FLAGf312e5ac3 [2021-11-12 23:12:54,165 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:12:54,166 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i [2021-11-12 23:12:54,207 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data/5086e15f9/a42c084c0d124acfb11843044db3e6e2/FLAGf312e5ac3 [2021-11-12 23:12:54,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/data/5086e15f9/a42c084c0d124acfb11843044db3e6e2 [2021-11-12 23:12:54,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:12:54,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:12:54,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:12:54,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:12:54,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:12:54,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:12:54" (1/1) ... [2021-11-12 23:12:54,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3ed3a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:54, skipping insertion in model container [2021-11-12 23:12:54,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:12:54" (1/1) ... [2021-11-12 23:12:54,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:12:54,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:12:55,050 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2021-11-12 23:12:55,060 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2021-11-12 23:12:55,089 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:12:55,097 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:12:56,023 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,026 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,027 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,030 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,031 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,068 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,070 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,071 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,073 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,074 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,075 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:56,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:12:56,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:12:56,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:12:56,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:12:56,541 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:12:56,542 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:12:56,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:12:56,543 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:12:56,544 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:12:56,545 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:12:56,826 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:12:57,209 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,209 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,243 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,244 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,252 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,253 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,276 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,277 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,278 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,279 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,280 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:12:57,382 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:12:57,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:12:57,498 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2021-11-12 23:12:57,499 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2021-11-12 23:12:57,500 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:12:57,500 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:12:57,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,532 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,533 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,534 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,558 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,559 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,591 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:12:57,592 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:12:57,593 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:12:57,594 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:12:57,595 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:12:57,595 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:12:57,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:12:57,596 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:12:57,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:12:57,597 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:12:57,617 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:12:57,747 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,747 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,755 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,756 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,759 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,759 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,767 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,768 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,769 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,769 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,770 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,770 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:12:57,871 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:12:57,900 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4503,4516] [2021-11-12 23:12:57,912 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/sv-benchmarks/c/aws-c-common/aws_hash_table_init_unbounded_harness.i[4563,4576] [2021-11-12 23:12:57,914 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-12 23:12:57,915 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-12 23:12:57,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,972 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,980 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,980 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:57,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-12 23:12:58,012 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-12 23:12:58,013 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-12 23:12:58,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-12 23:12:58,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-12 23:12:58,050 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-12 23:12:58,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-12 23:12:58,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-12 23:12:58,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-12 23:12:58,052 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-12 23:12:58,098 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-12 23:12:58,202 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,203 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,212 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,213 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,216 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,216 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,227 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-12 23:12:58,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:12:58,624 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:12:58,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58 WrapperNode [2021-11-12 23:12:58,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:12:58,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:12:58,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:12:58,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:12:58,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:12:58,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:12:58,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:12:58,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:12:58,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:12:58,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:12:58,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:12:58,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:12:58,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (1/1) ... [2021-11-12 23:12:58,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:12:58,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:12:59,009 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:12:59,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:12:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-12 23:12:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-12 23:12:59,051 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-12 23:12:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-12 23:12:59,051 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-12 23:12:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:12:59,052 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:12:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-12 23:12:59,052 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-12 23:12:59,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:12:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:12:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:12:59,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:12:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-12 23:12:59,053 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-12 23:12:59,053 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-12 23:12:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:12:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-12 23:12:59,054 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-12 23:12:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-12 23:12:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:12:59,054 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-12 23:12:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-12 23:12:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2021-11-12 23:12:59,055 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2021-11-12 23:12:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:12:59,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:12:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-12 23:12:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-12 23:12:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-12 23:12:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2021-11-12 23:12:59,056 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2021-11-12 23:12:59,056 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-12 23:12:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-12 23:12:59,057 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-12 23:12:59,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-12 23:12:59,057 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-12 23:12:59,057 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-12 23:12:59,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-12 23:12:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-12 23:12:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-12 23:12:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-12 23:12:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-12 23:12:59,058 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-12 23:12:59,058 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-12 23:12:59,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-12 23:12:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-12 23:12:59,059 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-12 23:12:59,059 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2021-11-12 23:12:59,059 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2021-11-12 23:13:17,922 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-11-12 23:13:17,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:13:17,955 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-12 23:13:17,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:17 BoogieIcfgContainer [2021-11-12 23:13:17,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:13:17,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:13:17,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:13:17,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:13:17,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:12:54" (1/3) ... [2021-11-12 23:13:17,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f59ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:17, skipping insertion in model container [2021-11-12 23:13:17,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:12:58" (2/3) ... [2021-11-12 23:13:17,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@661f59ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:13:17, skipping insertion in model container [2021-11-12 23:13:17,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:13:17" (3/3) ... [2021-11-12 23:13:17,965 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_unbounded_harness.i [2021-11-12 23:13:17,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:13:17,970 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:13:18,018 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:13:18,032 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-12 23:13:18,033 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:13:18,052 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 98 states have internal predecessors, (121), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-12 23:13:18,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-12 23:13:18,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:18,061 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:18,062 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:18,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:18,067 INFO L85 PathProgramCache]: Analyzing trace with hash 947556047, now seen corresponding path program 1 times [2021-11-12 23:13:18,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:18,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777665798] [2021-11-12 23:13:18,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:18,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:18,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:18,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:18,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:13:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:21,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:13:21,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-12 23:13:22,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:22,312 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-12 23:13:22,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:22,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777665798] [2021-11-12 23:13:22,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777665798] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:13:22,314 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:13:22,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-12 23:13:22,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450088587] [2021-11-12 23:13:22,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:22,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:13:22,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:13:22,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:13:22,349 INFO L87 Difference]: Start difference. First operand has 150 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 98 states have internal predecessors, (121), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:13:22,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:22,412 INFO L93 Difference]: Finished difference Result 294 states and 384 transitions. [2021-11-12 23:13:22,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:13:22,415 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 64 [2021-11-12 23:13:22,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:22,425 INFO L225 Difference]: With dead ends: 294 [2021-11-12 23:13:22,425 INFO L226 Difference]: Without dead ends: 143 [2021-11-12 23:13:22,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:13:22,432 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.04ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:22,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 5.04ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:13:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-12 23:13:22,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2021-11-12 23:13:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 92 states have internal predecessors, (111), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-12 23:13:22,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 178 transitions. [2021-11-12 23:13:22,483 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 178 transitions. Word has length 64 [2021-11-12 23:13:22,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:22,485 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 178 transitions. [2021-11-12 23:13:22,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-12 23:13:22,485 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 178 transitions. [2021-11-12 23:13:22,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-12 23:13:22,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:22,489 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:22,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-12 23:13:22,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:22,709 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:22,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:22,713 INFO L85 PathProgramCache]: Analyzing trace with hash -189789485, now seen corresponding path program 1 times [2021-11-12 23:13:22,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:22,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513694479] [2021-11-12 23:13:22,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:22,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:22,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:22,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:13:26,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:26,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:13:26,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:26,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:27,097 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:27,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:27,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513694479] [2021-11-12 23:13:27,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513694479] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:27,098 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:27,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:13:27,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240537350] [2021-11-12 23:13:27,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:27,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:13:27,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:27,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:13:27,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:13:27,101 INFO L87 Difference]: Start difference. First operand 143 states and 178 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:13:27,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:27,389 INFO L93 Difference]: Finished difference Result 276 states and 340 transitions. [2021-11-12 23:13:27,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:13:27,390 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 64 [2021-11-12 23:13:27,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:27,394 INFO L225 Difference]: With dead ends: 276 [2021-11-12 23:13:27,395 INFO L226 Difference]: Without dead ends: 152 [2021-11-12 23:13:27,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:13:27,397 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 47 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.40ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 193.74ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:27,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 678 Invalid, 25 Unknown, 0 Unchecked, 6.40ms Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 193.74ms Time] [2021-11-12 23:13:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-12 23:13:27,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 146. [2021-11-12 23:13:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 94 states have (on average 1.202127659574468) internal successors, (113), 95 states have internal predecessors, (113), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-12 23:13:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 180 transitions. [2021-11-12 23:13:27,416 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 180 transitions. Word has length 64 [2021-11-12 23:13:27,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:27,417 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 180 transitions. [2021-11-12 23:13:27,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:13:27,417 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 180 transitions. [2021-11-12 23:13:27,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-12 23:13:27,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:27,420 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:27,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:27,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:27,637 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1480678321, now seen corresponding path program 1 times [2021-11-12 23:13:27,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:27,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1536587715] [2021-11-12 23:13:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:27,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:27,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:27,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:13:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:31,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1563 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:13:31,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:31,718 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:31,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:31,898 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:31,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1536587715] [2021-11-12 23:13:31,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1536587715] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:31,899 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:31,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:13:31,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934694082] [2021-11-12 23:13:31,899 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:31,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:13:31,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:31,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:13:31,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:31,901 INFO L87 Difference]: Start difference. First operand 146 states and 180 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:13:34,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:13:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:34,171 INFO L93 Difference]: Finished difference Result 266 states and 323 transitions. [2021-11-12 23:13:34,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:34,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2021-11-12 23:13:34,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:34,174 INFO L225 Difference]: With dead ends: 266 [2021-11-12 23:13:34,174 INFO L226 Difference]: Without dead ends: 148 [2021-11-12 23:13:34,175 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:13:34,176 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2172.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2229.90ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:34,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 521 Invalid, 7 Unknown, 0 Unchecked, 2.94ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2229.90ms Time] [2021-11-12 23:13:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-12 23:13:34,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-12 23:13:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 97 states have internal predecessors, (115), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-12 23:13:34,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 182 transitions. [2021-11-12 23:13:34,193 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 182 transitions. Word has length 65 [2021-11-12 23:13:34,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:34,194 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 182 transitions. [2021-11-12 23:13:34,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:13:34,194 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 182 transitions. [2021-11-12 23:13:34,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-12 23:13:34,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:34,196 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:34,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:34,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:34,413 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:34,413 INFO L85 PathProgramCache]: Analyzing trace with hash -341390930, now seen corresponding path program 1 times [2021-11-12 23:13:34,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:34,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012177256] [2021-11-12 23:13:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:34,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:34,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:34,418 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:34,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:13:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:38,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 1574 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:13:38,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:38,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:38,817 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:38,818 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:38,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012177256] [2021-11-12 23:13:38,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012177256] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:38,818 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:38,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:13:38,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587210056] [2021-11-12 23:13:38,819 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:38,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:13:38,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:38,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:13:38,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:38,820 INFO L87 Difference]: Start difference. First operand 148 states and 182 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:13:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:38,854 INFO L93 Difference]: Finished difference Result 179 states and 216 transitions. [2021-11-12 23:13:38,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:38,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 67 [2021-11-12 23:13:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:38,857 INFO L225 Difference]: With dead ends: 179 [2021-11-12 23:13:38,857 INFO L226 Difference]: Without dead ends: 151 [2021-11-12 23:13:38,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:13:38,858 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 0 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.66ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:38,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 524 Invalid, 6 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 22.66ms Time] [2021-11-12 23:13:38,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-12 23:13:38,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2021-11-12 23:13:38,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 99 states have internal predecessors, (117), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2021-11-12 23:13:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 185 transitions. [2021-11-12 23:13:38,875 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 185 transitions. Word has length 67 [2021-11-12 23:13:38,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:38,876 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 185 transitions. [2021-11-12 23:13:38,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-12 23:13:38,876 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 185 transitions. [2021-11-12 23:13:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-12 23:13:38,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:38,878 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:38,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-12 23:13:39,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:39,093 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:39,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:39,093 INFO L85 PathProgramCache]: Analyzing trace with hash 832205563, now seen corresponding path program 1 times [2021-11-12 23:13:39,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:39,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925924633] [2021-11-12 23:13:39,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:39,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:39,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:39,098 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:39,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:13:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:42,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:13:42,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:42,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:43,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:43,022 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925924633] [2021-11-12 23:13:43,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925924633] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:43,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:43,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:13:43,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293675863] [2021-11-12 23:13:43,023 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:43,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:13:43,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:43,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:13:43,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:13:43,024 INFO L87 Difference]: Start difference. First operand 151 states and 185 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:13:43,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:43,125 INFO L93 Difference]: Finished difference Result 179 states and 215 transitions. [2021-11-12 23:13:43,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:13:43,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 71 [2021-11-12 23:13:43,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:43,128 INFO L225 Difference]: With dead ends: 179 [2021-11-12 23:13:43,128 INFO L226 Difference]: Without dead ends: 151 [2021-11-12 23:13:43,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:13:43,130 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 1 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.12ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:43,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 868 Invalid, 14 Unknown, 0 Unchecked, 4.12ms Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 61.15ms Time] [2021-11-12 23:13:43,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-11-12 23:13:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2021-11-12 23:13:43,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 96 states have (on average 1.1770833333333333) internal successors, (113), 97 states have internal predecessors, (113), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-12 23:13:43,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 180 transitions. [2021-11-12 23:13:43,144 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 180 transitions. Word has length 71 [2021-11-12 23:13:43,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:43,145 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 180 transitions. [2021-11-12 23:13:43,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-12 23:13:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 180 transitions. [2021-11-12 23:13:43,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-12 23:13:43,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:43,148 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:43,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:43,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:43,372 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:43,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1235231452, now seen corresponding path program 1 times [2021-11-12 23:13:43,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:43,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400832412] [2021-11-12 23:13:43,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:43,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:43,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:43,380 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:43,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:13:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:47,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:13:47,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:47,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:48,514 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:48,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [400832412] [2021-11-12 23:13:48,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [400832412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:48,515 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:48,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:13:48,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337547737] [2021-11-12 23:13:48,515 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:48,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:13:48,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:13:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:13:48,517 INFO L87 Difference]: Start difference. First operand 148 states and 180 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:13:48,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:48,612 INFO L93 Difference]: Finished difference Result 248 states and 298 transitions. [2021-11-12 23:13:48,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:13:48,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 87 [2021-11-12 23:13:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:48,617 INFO L225 Difference]: With dead ends: 248 [2021-11-12 23:13:48,618 INFO L226 Difference]: Without dead ends: 152 [2021-11-12 23:13:48,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:13:48,620 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 2 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.90ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.94ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:48,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 688 Invalid, 11 Unknown, 0 Unchecked, 2.90ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 53.94ms Time] [2021-11-12 23:13:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-12 23:13:48,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-12 23:13:48,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 100 states have internal predecessors, (116), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (36), 34 states have call predecessors, (36), 33 states have call successors, (36) [2021-11-12 23:13:48,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 186 transitions. [2021-11-12 23:13:48,650 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 186 transitions. Word has length 87 [2021-11-12 23:13:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:48,651 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 186 transitions. [2021-11-12 23:13:48,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-12 23:13:48,651 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 186 transitions. [2021-11-12 23:13:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-12 23:13:48,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:48,660 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:13:48,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:48,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:48,885 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1883432893, now seen corresponding path program 1 times [2021-11-12 23:13:48,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:48,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003458342] [2021-11-12 23:13:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:48,890 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:48,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:48,891 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:48,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-12 23:13:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:13:52,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1694 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:13:52,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:13:53,296 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:53,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:13:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-12 23:13:53,647 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:13:53,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003458342] [2021-11-12 23:13:53,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003458342] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:13:53,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:13:53,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:13:53,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008403765] [2021-11-12 23:13:53,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:13:53,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:13:53,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:13:53,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:13:53,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:13:53,650 INFO L87 Difference]: Start difference. First operand 152 states and 186 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:13:55,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:13:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:13:55,790 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2021-11-12 23:13:55,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:13:55,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 93 [2021-11-12 23:13:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:13:55,793 INFO L225 Difference]: With dead ends: 187 [2021-11-12 23:13:55,793 INFO L226 Difference]: Without dead ends: 152 [2021-11-12 23:13:55,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:13:55,795 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 0 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2092.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.27ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2127.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:13:55,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 690 Invalid, 9 Unknown, 0 Unchecked, 4.27ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2127.68ms Time] [2021-11-12 23:13:55,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-12 23:13:55,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-12 23:13:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 100 states have internal predecessors, (114), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (36), 34 states have call predecessors, (36), 33 states have call successors, (36) [2021-11-12 23:13:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 184 transitions. [2021-11-12 23:13:55,807 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 184 transitions. Word has length 93 [2021-11-12 23:13:55,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:13:55,807 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 184 transitions. [2021-11-12 23:13:55,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-12 23:13:55,808 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 184 transitions. [2021-11-12 23:13:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-12 23:13:55,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:13:55,810 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:13:55,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:13:56,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:13:56,025 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:13:56,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:13:56,025 INFO L85 PathProgramCache]: Analyzing trace with hash -565149588, now seen corresponding path program 1 times [2021-11-12 23:13:56,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:13:56,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821322969] [2021-11-12 23:13:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:13:56,029 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:13:56,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:13:56,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:13:56,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:14:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:00,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 1819 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:14:00,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-12 23:14:00,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:01,227 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 23:14:01,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:01,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821322969] [2021-11-12 23:14:01,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821322969] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:01,228 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:01,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:14:01,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260683238] [2021-11-12 23:14:01,228 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:01,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:14:01,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:01,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:14:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:01,230 INFO L87 Difference]: Start difference. First operand 152 states and 184 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 23:14:01,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:01,263 INFO L93 Difference]: Finished difference Result 251 states and 297 transitions. [2021-11-12 23:14:01,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:01,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) Word has length 127 [2021-11-12 23:14:01,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:01,267 INFO L225 Difference]: With dead ends: 251 [2021-11-12 23:14:01,267 INFO L226 Difference]: Without dead ends: 152 [2021-11-12 23:14:01,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:01,269 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 0 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:01,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 687 Invalid, 5 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 19.11ms Time] [2021-11-12 23:14:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-12 23:14:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2021-11-12 23:14:01,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 96 states have (on average 1.1354166666666667) internal successors, (109), 97 states have internal predecessors, (109), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-12 23:14:01,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 176 transitions. [2021-11-12 23:14:01,282 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 176 transitions. Word has length 127 [2021-11-12 23:14:01,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:01,283 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 176 transitions. [2021-11-12 23:14:01,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-12 23:14:01,283 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 176 transitions. [2021-11-12 23:14:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-12 23:14:01,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:01,285 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:14:01,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:01,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:01,501 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:01,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:01,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1565924244, now seen corresponding path program 1 times [2021-11-12 23:14:01,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:01,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826368777] [2021-11-12 23:14:01,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:01,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:01,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:01,505 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:01,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:14:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:06,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:14:06,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-12 23:14:06,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-11-12 23:14:06,875 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:06,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826368777] [2021-11-12 23:14:06,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826368777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:06,875 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:06,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:14:06,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496998480] [2021-11-12 23:14:06,875 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:06,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:14:06,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:06,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:14:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:14:06,877 INFO L87 Difference]: Start difference. First operand 148 states and 176 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:14:06,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:06,968 INFO L93 Difference]: Finished difference Result 189 states and 224 transitions. [2021-11-12 23:14:06,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:14:06,969 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2021-11-12 23:14:06,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:06,971 INFO L225 Difference]: With dead ends: 189 [2021-11-12 23:14:06,971 INFO L226 Difference]: Without dead ends: 152 [2021-11-12 23:14:06,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:06,972 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.68ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.06ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:06,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 671 Invalid, 12 Unknown, 0 Unchecked, 1.68ms Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 60.06ms Time] [2021-11-12 23:14:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-12 23:14:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2021-11-12 23:14:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 99 states have (on average 1.1313131313131313) internal successors, (112), 100 states have internal predecessors, (112), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (36), 34 states have call predecessors, (36), 33 states have call successors, (36) [2021-11-12 23:14:06,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 182 transitions. [2021-11-12 23:14:06,982 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 182 transitions. Word has length 132 [2021-11-12 23:14:06,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:06,983 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 182 transitions. [2021-11-12 23:14:06,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-12 23:14:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 182 transitions. [2021-11-12 23:14:06,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-11-12 23:14:06,986 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:06,986 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:14:07,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:07,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:07,208 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:07,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:07,209 INFO L85 PathProgramCache]: Analyzing trace with hash -409171429, now seen corresponding path program 1 times [2021-11-12 23:14:07,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:07,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160537162] [2021-11-12 23:14:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:07,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:07,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:07,213 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:07,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:14:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:11,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:14:11,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:12,120 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 23:14:12,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 23:14:12,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:12,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160537162] [2021-11-12 23:14:12,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160537162] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:12,489 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:12,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-12 23:14:12,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901020904] [2021-11-12 23:14:12,491 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:12,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:14:12,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:12,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:14:12,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:14:12,494 INFO L87 Difference]: Start difference. First operand 152 states and 182 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 23:14:14,585 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:14,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:14,654 INFO L93 Difference]: Finished difference Result 189 states and 223 transitions. [2021-11-12 23:14:14,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:14:14,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 138 [2021-11-12 23:14:14,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:14,657 INFO L225 Difference]: With dead ends: 189 [2021-11-12 23:14:14,657 INFO L226 Difference]: Without dead ends: 152 [2021-11-12 23:14:14,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:14:14,658 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 1 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2082.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.47ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2116.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:14,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 507 Invalid, 6 Unknown, 0 Unchecked, 1.47ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2116.43ms Time] [2021-11-12 23:14:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-11-12 23:14:14,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2021-11-12 23:14:14,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 96 states have (on average 1.125) internal successors, (108), 97 states have internal predecessors, (108), 34 states have call successors, (34), 17 states have call predecessors, (34), 17 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-12 23:14:14,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 175 transitions. [2021-11-12 23:14:14,668 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 175 transitions. Word has length 138 [2021-11-12 23:14:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:14,668 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 175 transitions. [2021-11-12 23:14:14,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-12 23:14:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 175 transitions. [2021-11-12 23:14:14,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-12 23:14:14,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:14,671 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:14:14,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-12 23:14:14,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:14,884 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:14,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1943155675, now seen corresponding path program 1 times [2021-11-12 23:14:14,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:14,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227737945] [2021-11-12 23:14:14,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:14,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:14,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:14,889 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:14,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-12 23:14:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:19,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 1899 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:14:19,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:19,968 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 23:14:19,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 23:14:20,641 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:20,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227737945] [2021-11-12 23:14:20,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227737945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:20,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:20,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-12 23:14:20,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198530763] [2021-11-12 23:14:20,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:20,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:14:20,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:20,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:14:20,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:20,644 INFO L87 Difference]: Start difference. First operand 148 states and 175 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:14:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:20,762 INFO L93 Difference]: Finished difference Result 196 states and 228 transitions. [2021-11-12 23:14:20,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-12 23:14:20,763 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 145 [2021-11-12 23:14:20,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:20,764 INFO L225 Difference]: With dead ends: 196 [2021-11-12 23:14:20,764 INFO L226 Difference]: Without dead ends: 158 [2021-11-12 23:14:20,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:14:20,765 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 6 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.16ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:20,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 823 Invalid, 24 Unknown, 0 Unchecked, 2.19ms Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 108.16ms Time] [2021-11-12 23:14:20,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-12 23:14:20,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 153. [2021-11-12 23:14:20,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 100 states have (on average 1.12) internal successors, (112), 101 states have internal predecessors, (112), 34 states have call successors, (34), 17 states have call predecessors, (34), 18 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2021-11-12 23:14:20,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2021-11-12 23:14:20,779 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 145 [2021-11-12 23:14:20,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:20,780 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2021-11-12 23:14:20,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-12 23:14:20,780 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2021-11-12 23:14:20,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-12 23:14:20,783 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:20,783 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-11-12 23:14:20,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:20,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:20,993 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:20,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:20,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1968575859, now seen corresponding path program 1 times [2021-11-12 23:14:20,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:20,997 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976654191] [2021-11-12 23:14:20,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:20,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:20,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:20,998 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:20,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:14:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:25,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1911 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-12 23:14:25,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 23:14:26,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-12 23:14:26,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:26,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976654191] [2021-11-12 23:14:26,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976654191] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:26,883 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:26,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-12 23:14:26,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628785291] [2021-11-12 23:14:26,884 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:26,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:14:26,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:26,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:14:26,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:14:26,885 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-12 23:14:29,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:29,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:14:29,227 INFO L93 Difference]: Finished difference Result 191 states and 222 transitions. [2021-11-12 23:14:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-12 23:14:29,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 151 [2021-11-12 23:14:29,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:14:29,265 INFO L225 Difference]: With dead ends: 191 [2021-11-12 23:14:29,265 INFO L226 Difference]: Without dead ends: 146 [2021-11-12 23:14:29,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:14:29,266 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 3 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2212.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2222.60ms IncrementalHoareTripleChecker+Time [2021-11-12 23:14:29,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1147 Invalid, 40 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 2222.60ms Time] [2021-11-12 23:14:29,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-12 23:14:29,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-11-12 23:14:29,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 95 states have (on average 1.105263157894737) internal successors, (105), 96 states have internal predecessors, (105), 33 states have call successors, (33), 17 states have call predecessors, (33), 17 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-12 23:14:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 170 transitions. [2021-11-12 23:14:29,274 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 170 transitions. Word has length 151 [2021-11-12 23:14:29,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:14:29,275 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 170 transitions. [2021-11-12 23:14:29,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2021-11-12 23:14:29,275 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 170 transitions. [2021-11-12 23:14:29,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-12 23:14:29,278 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:14:29,278 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:14:29,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:14:29,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:14:29,500 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:14:29,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:14:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1989662329, now seen corresponding path program 1 times [2021-11-12 23:14:29,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:14:29,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239026377] [2021-11-12 23:14:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:14:29,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:14:29,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:14:29,505 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:14:29,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-12 23:14:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:14:34,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:14:34,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:14:35,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 23:14:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 23:14:36,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:14:38,571 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 23:14:38,571 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:14:38,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239026377] [2021-11-12 23:14:38,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239026377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:14:38,571 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:14:38,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18, 17] imperfect sequences [] total 22 [2021-11-12 23:14:38,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586691256] [2021-11-12 23:14:38,572 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:14:38,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-12 23:14:38,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:14:38,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-12 23:14:38,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:14:38,573 INFO L87 Difference]: Start difference. First operand 146 states and 170 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 19 states have internal predecessors, (79), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 23:14:40,780 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:42,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:44,797 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:46,809 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:48,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:50,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:52,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:54,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:57,167 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:14:59,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:01,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:03,182 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:07,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:07,480 INFO L93 Difference]: Finished difference Result 196 states and 227 transitions. [2021-11-12 23:15:07,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-12 23:15:07,480 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 19 states have internal predecessors, (79), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) Word has length 169 [2021-11-12 23:15:07,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:07,483 INFO L225 Difference]: With dead ends: 196 [2021-11-12 23:15:07,483 INFO L226 Difference]: Without dead ends: 163 [2021-11-12 23:15:07,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2021-11-12 23:15:07,485 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 35 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28111.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2786 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.61ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 28431.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:07,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2786 Invalid, 249 Unknown, 0 Unchecked, 7.61ms Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 13 Unknown, 69 Unchecked, 28431.11ms Time] [2021-11-12 23:15:07,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-12 23:15:07,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 158. [2021-11-12 23:15:07,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 105 states have (on average 1.1142857142857143) internal successors, (117), 107 states have internal predecessors, (117), 33 states have call successors, (33), 18 states have call predecessors, (33), 19 states have return successors, (34), 32 states have call predecessors, (34), 32 states have call successors, (34) [2021-11-12 23:15:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 184 transitions. [2021-11-12 23:15:07,495 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 184 transitions. Word has length 169 [2021-11-12 23:15:07,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:07,496 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 184 transitions. [2021-11-12 23:15:07,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 19 states have internal predecessors, (79), 3 states have call successors, (27), 3 states have call predecessors, (27), 5 states have return successors, (26), 4 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-12 23:15:07,497 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 184 transitions. [2021-11-12 23:15:07,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-12 23:15:07,499 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:07,499 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:07,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:07,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:07,713 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:07,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:07,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1596635319, now seen corresponding path program 1 times [2021-11-12 23:15:07,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:07,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322327049] [2021-11-12 23:15:07,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:07,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:07,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:07,719 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:07,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-12 23:15:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:12,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1990 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:15:12,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:13,167 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 23:15:13,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 23:15:13,840 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:13,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322327049] [2021-11-12 23:15:13,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322327049] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:15:13,841 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:15:13,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-12 23:15:13,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209671768] [2021-11-12 23:15:13,841 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:13,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:15:13,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:13,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:15:13,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:15:13,843 INFO L87 Difference]: Start difference. First operand 158 states and 184 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-12 23:15:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:13,918 INFO L93 Difference]: Finished difference Result 201 states and 233 transitions. [2021-11-12 23:15:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:15:13,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 169 [2021-11-12 23:15:13,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:13,921 INFO L225 Difference]: With dead ends: 201 [2021-11-12 23:15:13,921 INFO L226 Difference]: Without dead ends: 163 [2021-11-12 23:15:13,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:15:13,922 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 12 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 67.87ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:13,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 474 Invalid, 15 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 67.87ms Time] [2021-11-12 23:15:13,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-12 23:15:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2021-11-12 23:15:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 104 states have (on average 1.1057692307692308) internal successors, (115), 105 states have internal predecessors, (115), 34 states have call successors, (34), 18 states have call predecessors, (34), 18 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2021-11-12 23:15:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 183 transitions. [2021-11-12 23:15:13,932 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 183 transitions. Word has length 169 [2021-11-12 23:15:13,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:13,933 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 183 transitions. [2021-11-12 23:15:13,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-12 23:15:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 183 transitions. [2021-11-12 23:15:13,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-12 23:15:13,936 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:13,937 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:14,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:14,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:14,153 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:14,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:14,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1397232755, now seen corresponding path program 1 times [2021-11-12 23:15:14,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:14,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006970285] [2021-11-12 23:15:14,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:14,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:14,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:14,157 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:14,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:15:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:15:19,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 2007 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-12 23:15:19,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:15:19,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-12 23:15:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 23:15:21,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:15:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-12 23:15:24,016 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:15:24,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006970285] [2021-11-12 23:15:24,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006970285] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:15:24,016 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:15:24,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19, 18] imperfect sequences [] total 24 [2021-11-12 23:15:24,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034648661] [2021-11-12 23:15:24,017 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:15:24,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-12 23:15:24,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:15:24,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-12 23:15:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=490, Unknown=0, NotChecked=0, Total=552 [2021-11-12 23:15:24,019 INFO L87 Difference]: Start difference. First operand 157 states and 183 transitions. Second operand has 24 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 21 states have internal predecessors, (87), 5 states have call successors, (29), 3 states have call predecessors, (29), 7 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-12 23:15:26,224 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:28,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:30,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:32,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:34,205 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:36,211 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:38,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:40,435 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:42,439 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:46,235 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:15:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:15:46,514 INFO L93 Difference]: Finished difference Result 216 states and 250 transitions. [2021-11-12 23:15:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 23:15:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 21 states have internal predecessors, (87), 5 states have call successors, (29), 3 states have call predecessors, (29), 7 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) Word has length 175 [2021-11-12 23:15:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:15:46,517 INFO L225 Difference]: With dead ends: 216 [2021-11-12 23:15:46,517 INFO L226 Difference]: Without dead ends: 173 [2021-11-12 23:15:46,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2021-11-12 23:15:46,518 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 32 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21688.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 2754 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.51ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 139 IncrementalHoareTripleChecker+Unchecked, 21979.42ms IncrementalHoareTripleChecker+Time [2021-11-12 23:15:46,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 2754 Invalid, 314 Unknown, 0 Unchecked, 5.51ms Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 9 Unknown, 139 Unchecked, 21979.42ms Time] [2021-11-12 23:15:46,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-12 23:15:46,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 162. [2021-11-12 23:15:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 107 states have (on average 1.102803738317757) internal successors, (118), 109 states have internal predecessors, (118), 35 states have call successors, (35), 19 states have call predecessors, (35), 19 states have return successors, (37), 33 states have call predecessors, (37), 34 states have call successors, (37) [2021-11-12 23:15:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 190 transitions. [2021-11-12 23:15:46,526 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 190 transitions. Word has length 175 [2021-11-12 23:15:46,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:15:46,527 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 190 transitions. [2021-11-12 23:15:46,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 21 states have internal predecessors, (87), 5 states have call successors, (29), 3 states have call predecessors, (29), 7 states have return successors, (28), 6 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-12 23:15:46,528 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 190 transitions. [2021-11-12 23:15:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-12 23:15:46,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:15:46,530 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:15:46,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:15:46,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:15:46,752 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:15:46,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:15:46,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1226739171, now seen corresponding path program 1 times [2021-11-12 23:15:46,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:15:46,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066367472] [2021-11-12 23:15:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:15:46,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:15:46,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:15:46,757 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:15:46,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a913ef6e-a279-4050-942c-a7580fcd2bd7/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process