./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:59:32,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:59:32,993 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:59:33,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:59:33,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:59:33,032 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:59:33,034 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:59:33,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:59:33,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:59:33,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:59:33,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:59:33,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:59:33,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:59:33,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:59:33,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:59:33,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:59:33,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:59:33,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:59:33,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:59:33,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:59:33,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:59:33,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:59:33,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:59:33,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:59:33,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:59:33,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:59:33,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:59:33,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:59:33,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:59:33,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:59:33,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:59:33,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:59:33,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:59:33,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:59:33,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:59:33,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:59:33,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:59:33,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:59:33,080 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:59:33,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:59:33,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:59:33,084 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-19 13:59:33,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:59:33,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:59:33,114 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:59:33,114 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:59:33,114 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:59:33,115 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:59:33,115 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:59:33,115 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:59:33,115 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:59:33,115 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:59:33,116 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:59:33,116 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:59:33,116 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:59:33,116 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:59:33,117 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:59:33,121 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:59:33,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:59:33,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:59:33,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:59:33,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:59:33,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:59:33,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:59:33,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:59:33,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:59:33,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:59:33,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:59:33,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:59:33,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:59:33,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:33,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:59:33,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:59:33,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:59:33,128 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:59:33,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:59:33,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:59:33,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:59:33,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:59:33,130 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_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-11-19 13:59:33,454 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:59:33,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:59:33,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:59:33,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:59:33,500 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:59:33,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-19 13:59:33,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data/328cf5f30/82f3d532790b488f8d942a7fb6897576/FLAGc677d5b5c [2021-11-19 13:59:34,501 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:59:34,502 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-19 13:59:34,585 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data/328cf5f30/82f3d532790b488f8d942a7fb6897576/FLAGc677d5b5c [2021-11-19 13:59:34,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data/328cf5f30/82f3d532790b488f8d942a7fb6897576 [2021-11-19 13:59:34,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:59:34,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:59:34,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:34,952 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:59:34,955 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:59:34,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:34" (1/1) ... [2021-11-19 13:59:34,958 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da9c927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:34, skipping insertion in model container [2021-11-19 13:59:34,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:34" (1/1) ... [2021-11-19 13:59:34,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:59:35,069 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:59:35,381 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-19 13:59:35,388 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-19 13:59:35,412 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:59:35,417 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:59:36,376 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,381 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,381 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,383 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,386 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,408 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,409 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,416 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,420 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,427 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,428 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,429 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,429 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:36,850 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:59:36,851 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:59:36,853 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:59:36,854 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:59:36,856 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:59:36,857 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:59:36,858 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:59:36,859 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:59:36,860 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:59:36,861 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:59:37,057 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:59:37,145 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,145 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,151 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,165 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,255 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,256 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,257 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,257 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,258 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,259 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,259 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,260 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,261 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,261 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,262 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,262 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,263 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,266 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,268 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,272 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,273 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,282 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,284 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,284 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:37,302 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:37,339 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 13:59:37,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6b81ac8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:37, skipping insertion in model container [2021-11-19 13:59:37,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:37,341 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 13:59:37,344 INFO L158 Benchmark]: Toolchain (without parser) took 2392.58ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 84.1MB in the beginning and 97.3MB in the end (delta: -13.1MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2021-11-19 13:59:37,345 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 86.6MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:59:37,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2389.64ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 84.1MB in the beginning and 97.3MB in the end (delta: -13.1MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2021-11-19 13:59:37,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 86.6MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2389.64ms. Allocated memory was 111.1MB in the beginning and 142.6MB in the end (delta: 31.5MB). Free memory was 84.1MB in the beginning and 97.3MB in the end (delta: -13.1MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: 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_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:59:39,803 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:59:39,807 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:59:39,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:59:39,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:59:39,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:59:39,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:59:39,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:59:39,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:59:39,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:59:39,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:59:39,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:59:39,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:59:39,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:59:39,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:59:39,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:59:39,897 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:59:39,898 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:59:39,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:59:39,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:59:39,928 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:59:39,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:59:39,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:59:39,936 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:59:39,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:59:39,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:59:39,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:59:39,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:59:39,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:59:39,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:59:39,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:59:39,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:59:39,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:59:39,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:59:39,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:59:39,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:59:39,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:59:39,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:59:39,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:59:39,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:59:39,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:59:39,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-19 13:59:40,005 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:59:40,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:59:40,007 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:59:40,007 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:59:40,007 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:59:40,008 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:59:40,008 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:59:40,008 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:59:40,008 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:59:40,008 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:59:40,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:59:40,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:59:40,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:59:40,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:59:40,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:59:40,012 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:59:40,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:59:40,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:59:40,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 13:59:40,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:59:40,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:40,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:59:40,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:59:40,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:59:40,015 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 13:59:40,015 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 13:59:40,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:59:40,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:59:40,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:59:40,016 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_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 355537246d5dfb9690a92cc5d0cbf014736bcc62122f38f5559ea0fbf5331d1c [2021-11-19 13:59:40,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:59:40,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:59:40,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:59:40,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:59:40,464 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:59:40,466 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-19 13:59:40,546 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data/8fa5218d8/9d7e22e57dab43b7bf94dd1609259cee/FLAG98f5598e3 [2021-11-19 13:59:41,621 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:59:41,622 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i [2021-11-19 13:59:41,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data/8fa5218d8/9d7e22e57dab43b7bf94dd1609259cee/FLAG98f5598e3 [2021-11-19 13:59:41,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/data/8fa5218d8/9d7e22e57dab43b7bf94dd1609259cee [2021-11-19 13:59:41,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:59:41,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:59:41,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:41,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:59:41,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:59:41,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:41" (1/1) ... [2021-11-19 13:59:42,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a8d850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:42, skipping insertion in model container [2021-11-19 13:59:42,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:59:41" (1/1) ... [2021-11-19 13:59:42,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:59:42,171 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:59:42,455 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-19 13:59:42,464 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-19 13:59:42,496 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:59:42,505 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:59:43,531 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,532 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,533 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,534 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,535 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,550 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,551 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,554 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,555 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,557 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,558 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,559 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:43,560 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:59:44,037 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:59:44,039 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:59:44,040 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:59:44,042 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:59:44,043 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:59:44,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:59:44,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:59:44,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:59:44,047 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:59:44,277 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:59:44,333 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,334 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,340 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,350 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,426 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,427 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,428 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,429 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,429 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,430 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,430 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,431 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,432 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,432 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,433 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,433 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,434 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,437 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,438 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,439 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,439 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,444 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,444 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,455 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,457 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,457 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,475 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:44,517 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 13:59:44,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:59:44,615 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-19 13:59:44,617 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-19 13:59:44,623 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:59:44,625 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:59:44,698 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,699 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,699 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,700 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,701 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,716 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,717 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,718 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,718 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,720 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,721 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,722 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,774 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:59:44,775 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:59:44,776 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:59:44,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:59:44,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:59:44,782 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:59:44,784 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:59:44,785 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:59:44,786 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:59:44,786 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:59:44,828 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:59:44,859 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,860 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,861 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,867 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,936 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,938 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,938 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,940 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,941 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,942 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,943 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,944 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,944 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,945 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,946 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,946 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,947 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,948 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,948 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,949 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,952 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,952 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,960 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,962 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,962 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:44,981 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:45,012 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:59:45,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4506,4519] [2021-11-19 13:59:45,038 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_either_harness.i[4566,4579] [2021-11-19 13:59:45,040 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-19 13:59:45,041 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-19 13:59:45,088 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,088 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,089 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,089 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,090 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,096 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,097 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,098 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,099 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,100 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,100 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,101 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,101 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,153 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-19 13:59:45,154 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-19 13:59:45,155 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-19 13:59:45,156 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-19 13:59:45,157 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-19 13:59:45,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-19 13:59:45,158 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-19 13:59:45,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-19 13:59:45,159 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-19 13:59:45,160 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-19 13:59:45,182 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-19 13:59:45,199 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,200 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,201 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,206 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,231 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,234 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,235 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,235 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,236 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,237 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,241 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,242 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,242 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,242 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,243 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,244 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,245 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,246 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,253 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,253 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,256 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,256 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,265 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,267 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,268 WARN L1537 CHandler]: Possible shadowing of function index [2021-11-19 13:59:45,311 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:59:45,660 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:59:45,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45 WrapperNode [2021-11-19 13:59:45,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:59:45,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:59:45,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:59:45,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:59:45,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,931 INFO L137 Inliner]: procedures = 719, calls = 1889, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 905 [2021-11-19 13:59:45,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:59:45,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:59:45,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:59:45,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:59:45,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:45,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:59:46,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:59:46,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:59:46,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:59:46,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (1/1) ... [2021-11-19 13:59:46,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:59:46,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:59:46,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:59:46,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:59:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_either [2021-11-19 13:59:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_either [2021-11-19 13:59:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-19 13:59:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-19 13:59:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-19 13:59:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-19 13:59:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:59:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-19 13:59:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-19 13:59:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-19 13:59:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-19 13:59:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-19 13:59:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-19 13:59:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 13:59:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-19 13:59:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-19 13:59:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-19 13:59:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-19 13:59:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-19 13:59:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-19 13:59:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 13:59:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 13:59:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 13:59:46,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-19 13:59:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 13:59:46,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:59:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 13:59:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-19 13:59:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-19 13:59:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-19 13:59:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-19 13:59:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:59:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:59:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-19 13:59:46,193 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-19 13:59:46,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 13:59:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-19 13:59:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-19 13:59:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-19 13:59:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-19 13:59:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-19 13:59:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-19 13:59:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-19 13:59:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-19 13:59:46,194 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-19 13:59:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 13:59:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 13:59:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-19 13:59:46,195 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-19 13:59:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:59:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-19 13:59:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 13:59:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-19 13:59:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 13:59:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-19 13:59:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-19 13:59:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-19 13:59:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-19 13:59:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-19 13:59:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-19 13:59:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-19 13:59:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-19 13:59:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-19 13:59:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-19 13:59:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-19 13:59:46,580 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:59:46,582 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:59:51,155 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:59:51,180 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:59:51,180 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-19 13:59:51,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:51 BoogieIcfgContainer [2021-11-19 13:59:51,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:59:51,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:59:51,188 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:59:51,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:59:51,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:59:41" (1/3) ... [2021-11-19 13:59:51,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e98f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:51, skipping insertion in model container [2021-11-19 13:59:51,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:59:45" (2/3) ... [2021-11-19 13:59:51,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e98f66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:59:51, skipping insertion in model container [2021-11-19 13:59:51,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:59:51" (3/3) ... [2021-11-19 13:59:51,197 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_either_harness.i [2021-11-19 13:59:51,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:59:51,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 13:59:51,287 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:59:51,299 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:59:51,299 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 13:59:51,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 355 states, 215 states have (on average 1.2697674418604652) internal successors, (273), 218 states have internal predecessors, (273), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) [2021-11-19 13:59:51,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 13:59:51,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:51,363 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:51,365 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:59:51,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash 9305962, now seen corresponding path program 1 times [2021-11-19 13:59:51,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:51,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678967309] [2021-11-19 13:59:51,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:51,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:51,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:51,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:51,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 13:59:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:52,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 13:59:52,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:52,662 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-19 13:59:52,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:52,990 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-11-19 13:59:52,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:52,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678967309] [2021-11-19 13:59:52,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678967309] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:59:52,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:59:52,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2021-11-19 13:59:52,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950751962] [2021-11-19 13:59:52,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:53,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 13:59:53,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:53,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 13:59:53,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:59:53,034 INFO L87 Difference]: Start difference. First operand has 355 states, 215 states have (on average 1.2697674418604652) internal successors, (273), 218 states have internal predecessors, (273), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (113), 113 states have call predecessors, (113), 113 states have call successors, (113) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:59:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:53,148 INFO L93 Difference]: Finished difference Result 697 states and 1076 transitions. [2021-11-19 13:59:53,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 13:59:53,151 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 103 [2021-11-19 13:59:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:53,183 INFO L225 Difference]: With dead ends: 697 [2021-11-19 13:59:53,184 INFO L226 Difference]: Without dead ends: 348 [2021-11-19 13:59:53,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 13:59:53,206 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:53,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:59:53,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-11-19 13:59:53,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 348. [2021-11-19 13:59:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 210 states have (on average 1.2333333333333334) internal successors, (259), 212 states have internal predecessors, (259), 113 states have call successors, (113), 24 states have call predecessors, (113), 23 states have return successors, (111), 111 states have call predecessors, (111), 111 states have call successors, (111) [2021-11-19 13:59:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 483 transitions. [2021-11-19 13:59:53,339 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 483 transitions. Word has length 103 [2021-11-19 13:59:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:53,341 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 483 transitions. [2021-11-19 13:59:53,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-19 13:59:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 483 transitions. [2021-11-19 13:59:53,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 13:59:53,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:53,348 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:53,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:53,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:53,574 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:59:53,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash 537699952, now seen corresponding path program 1 times [2021-11-19 13:59:53,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:53,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282052558] [2021-11-19 13:59:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:53,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:53,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:53,579 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:53,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 13:59:54,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:54,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 13:59:54,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:54,850 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:54,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:55,281 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 13:59:55,281 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:55,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282052558] [2021-11-19 13:59:55,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282052558] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:59:55,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:59:55,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-19 13:59:55,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809130546] [2021-11-19 13:59:55,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:55,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:59:55,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:59:55,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:59:55,285 INFO L87 Difference]: Start difference. First operand 348 states and 483 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:59:55,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:55,646 INFO L93 Difference]: Finished difference Result 662 states and 930 transitions. [2021-11-19 13:59:55,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:59:55,647 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 103 [2021-11-19 13:59:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:55,653 INFO L225 Difference]: With dead ends: 662 [2021-11-19 13:59:55,654 INFO L226 Difference]: Without dead ends: 350 [2021-11-19 13:59:55,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:59:55,657 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 45 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:55,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1775 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:59:55,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-11-19 13:59:55,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-11-19 13:59:55,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 211 states have (on average 1.2322274881516588) internal successors, (260), 214 states have internal predecessors, (260), 113 states have call successors, (113), 24 states have call predecessors, (113), 24 states have return successors, (119), 111 states have call predecessors, (119), 111 states have call successors, (119) [2021-11-19 13:59:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 492 transitions. [2021-11-19 13:59:55,691 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 492 transitions. Word has length 103 [2021-11-19 13:59:55,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:55,692 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 492 transitions. [2021-11-19 13:59:55,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-19 13:59:55,692 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 492 transitions. [2021-11-19 13:59:55,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:59:55,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:55,695 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:55,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:55,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:55,914 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:59:55,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:55,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1231895835, now seen corresponding path program 1 times [2021-11-19 13:59:55,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:55,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639402696] [2021-11-19 13:59:55,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:55,918 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:55,919 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:55,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 13:59:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:59:56,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 1303 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 13:59:56,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 13:59:57,076 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 13:59:57,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 13:59:57,795 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 13:59:57,796 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 13:59:57,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639402696] [2021-11-19 13:59:57,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1639402696] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 13:59:57,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 13:59:57,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2021-11-19 13:59:57,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155179363] [2021-11-19 13:59:57,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:59:57,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:59:57,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 13:59:57,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:59:57,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:59:57,799 INFO L87 Difference]: Start difference. First operand 350 states and 492 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 13:59:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:59:58,755 INFO L93 Difference]: Finished difference Result 685 states and 985 transitions. [2021-11-19 13:59:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:59:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 111 [2021-11-19 13:59:58,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:59:58,761 INFO L225 Difference]: With dead ends: 685 [2021-11-19 13:59:58,762 INFO L226 Difference]: Without dead ends: 371 [2021-11-19 13:59:58,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:59:58,765 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 80 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:59:58,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 2653 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:59:58,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-11-19 13:59:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 369. [2021-11-19 13:59:58,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 227 states have (on average 1.2422907488986785) internal successors, (282), 230 states have internal predecessors, (282), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-11-19 13:59:58,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 529 transitions. [2021-11-19 13:59:58,801 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 529 transitions. Word has length 111 [2021-11-19 13:59:58,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:59:58,803 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 529 transitions. [2021-11-19 13:59:58,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-19 13:59:58,803 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 529 transitions. [2021-11-19 13:59:58,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-19 13:59:58,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:59:58,806 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:59:58,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 13:59:59,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 13:59:59,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 13:59:59,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:59:59,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1532145368, now seen corresponding path program 1 times [2021-11-19 13:59:59,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 13:59:59,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019980193] [2021-11-19 13:59:59,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:59:59,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 13:59:59,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 13:59:59,034 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 13:59:59,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 14:00:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:00,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 1383 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:00:00,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:00,524 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-19 14:00:00,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:01,096 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-11-19 14:00:01,097 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:01,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019980193] [2021-11-19 14:00:01,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019980193] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:01,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:01,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-19 14:00:01,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526282938] [2021-11-19 14:00:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:01,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:01,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:01,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:01,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:01,104 INFO L87 Difference]: Start difference. First operand 369 states and 529 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 14:00:01,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:01,791 INFO L93 Difference]: Finished difference Result 710 states and 1042 transitions. [2021-11-19 14:00:01,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:00:01,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 126 [2021-11-19 14:00:01,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:01,798 INFO L225 Difference]: With dead ends: 710 [2021-11-19 14:00:01,798 INFO L226 Difference]: Without dead ends: 377 [2021-11-19 14:00:01,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:00:01,803 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 68 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:01,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 2186 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:00:01,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-19 14:00:01,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 369. [2021-11-19 14:00:01,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 227 states have (on average 1.2422907488986785) internal successors, (282), 230 states have internal predecessors, (282), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-11-19 14:00:01,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 529 transitions. [2021-11-19 14:00:01,866 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 529 transitions. Word has length 126 [2021-11-19 14:00:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:01,867 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 529 transitions. [2021-11-19 14:00:01,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-19 14:00:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 529 transitions. [2021-11-19 14:00:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-19 14:00:01,874 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:01,874 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:01,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:02,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:02,089 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:02,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1643344622, now seen corresponding path program 1 times [2021-11-19 14:00:02,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:02,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659492218] [2021-11-19 14:00:02,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:02,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:02,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:02,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:02,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 14:00:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:03,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:00:03,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 14:00:03,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-11-19 14:00:04,610 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:04,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659492218] [2021-11-19 14:00:04,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659492218] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:04,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:04,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 12 [2021-11-19 14:00:04,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471864901] [2021-11-19 14:00:04,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:04,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:00:04,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:00:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:00:04,614 INFO L87 Difference]: Start difference. First operand 369 states and 529 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-19 14:00:05,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:05,994 INFO L93 Difference]: Finished difference Result 736 states and 1080 transitions. [2021-11-19 14:00:05,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:00:05,995 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 142 [2021-11-19 14:00:05,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:06,000 INFO L225 Difference]: With dead ends: 736 [2021-11-19 14:00:06,000 INFO L226 Difference]: Without dead ends: 403 [2021-11-19 14:00:06,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-11-19 14:00:06,005 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 117 mSDsluCounter, 2528 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 2972 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:06,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 2972 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:00:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-19 14:00:06,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 369. [2021-11-19 14:00:06,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 227 states have (on average 1.2422907488986785) internal successors, (282), 230 states have internal predecessors, (282), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-11-19 14:00:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 529 transitions. [2021-11-19 14:00:06,048 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 529 transitions. Word has length 142 [2021-11-19 14:00:06,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:06,050 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 529 transitions. [2021-11-19 14:00:06,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-19 14:00:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 529 transitions. [2021-11-19 14:00:06,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:00:06,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:06,055 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:06,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:06,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:06,281 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:06,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:06,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1991364579, now seen corresponding path program 1 times [2021-11-19 14:00:06,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:06,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111342930] [2021-11-19 14:00:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:06,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:06,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:06,285 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:06,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 14:00:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:07,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1511 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:00:07,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:00:08,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-19 14:00:09,460 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:09,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111342930] [2021-11-19 14:00:09,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111342930] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:09,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:09,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-19 14:00:09,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650377247] [2021-11-19 14:00:09,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:09,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 14:00:09,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:09,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 14:00:09,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:00:09,463 INFO L87 Difference]: Start difference. First operand 369 states and 529 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:00:11,562 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:13,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:15,571 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:19,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:19,430 INFO L93 Difference]: Finished difference Result 738 states and 1097 transitions. [2021-11-19 14:00:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:00:19,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2021-11-19 14:00:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:19,440 INFO L225 Difference]: With dead ends: 738 [2021-11-19 14:00:19,440 INFO L226 Difference]: Without dead ends: 405 [2021-11-19 14:00:19,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:00:19,452 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 21 mSDsluCounter, 1782 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2270 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:19,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2270 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 203 Invalid, 3 Unknown, 0 Unchecked, 9.5s Time] [2021-11-19 14:00:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-19 14:00:19,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 377. [2021-11-19 14:00:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 235 states have (on average 1.2425531914893617) internal successors, (292), 238 states have internal predecessors, (292), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-11-19 14:00:19,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 539 transitions. [2021-11-19 14:00:19,490 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 539 transitions. Word has length 157 [2021-11-19 14:00:19,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:19,492 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 539 transitions. [2021-11-19 14:00:19,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:00:19,493 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 539 transitions. [2021-11-19 14:00:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:00:19,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:19,498 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:19,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:19,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:19,717 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash -453024549, now seen corresponding path program 1 times [2021-11-19 14:00:19,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:19,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300923401] [2021-11-19 14:00:19,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:19,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:19,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:19,723 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:19,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 14:00:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:21,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 1509 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:00:21,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:22,139 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:00:22,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-19 14:00:22,981 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:22,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300923401] [2021-11-19 14:00:22,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300923401] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:22,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:22,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-19 14:00:22,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505160617] [2021-11-19 14:00:22,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:22,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:00:22,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:22,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:00:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:00:22,984 INFO L87 Difference]: Start difference. First operand 377 states and 539 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:00:25,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:27,099 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:29,105 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:34,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:00:34,059 INFO L93 Difference]: Finished difference Result 748 states and 1107 transitions. [2021-11-19 14:00:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:00:34,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2021-11-19 14:00:34,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:00:34,067 INFO L225 Difference]: With dead ends: 748 [2021-11-19 14:00:34,067 INFO L226 Difference]: Without dead ends: 407 [2021-11-19 14:00:34,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:00:34,072 INFO L933 BasicCegarLoop]: 487 mSDtfsCounter, 17 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2021-11-19 14:00:34,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 2748 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 220 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2021-11-19 14:00:34,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-19 14:00:34,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 381. [2021-11-19 14:00:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 239 states have (on average 1.2384937238493723) internal successors, (296), 242 states have internal predecessors, (296), 115 states have call successors, (115), 24 states have call predecessors, (115), 25 states have return successors, (132), 114 states have call predecessors, (132), 113 states have call successors, (132) [2021-11-19 14:00:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 543 transitions. [2021-11-19 14:00:34,099 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 543 transitions. Word has length 157 [2021-11-19 14:00:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:00:34,100 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 543 transitions. [2021-11-19 14:00:34,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:00:34,101 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 543 transitions. [2021-11-19 14:00:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:00:34,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:00:34,104 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:00:34,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 14:00:34,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:00:34,323 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:00:34,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:00:34,323 INFO L85 PathProgramCache]: Analyzing trace with hash -934104807, now seen corresponding path program 1 times [2021-11-19 14:00:34,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:00:34,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506779253] [2021-11-19 14:00:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:00:34,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:00:34,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:00:34,326 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:00:34,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 14:00:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:00:35,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 14:00:35,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:00:43,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28 [2021-11-19 14:00:43,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-19 14:00:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-19 14:00:44,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:00:49,788 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-19 14:00:49,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-19 14:00:49,847 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-19 14:00:49,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-19 14:00:50,242 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-19 14:00:50,243 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:00:50,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506779253] [2021-11-19 14:00:50,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506779253] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:00:50,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:00:50,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 13 [2021-11-19 14:00:50,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161537930] [2021-11-19 14:00:50,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:00:50,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:00:50,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:00:50,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:00:50,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=124, Unknown=2, NotChecked=0, Total=156 [2021-11-19 14:00:50,245 INFO L87 Difference]: Start difference. First operand 381 states and 543 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-19 14:00:52,386 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:54,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:56,401 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:00:58,410 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:07,053 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:09,059 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:01:11,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:11,535 INFO L93 Difference]: Finished difference Result 739 states and 1079 transitions. [2021-11-19 14:01:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 14:01:11,538 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 157 [2021-11-19 14:01:11,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:11,543 INFO L225 Difference]: With dead ends: 739 [2021-11-19 14:01:11,543 INFO L226 Difference]: Without dead ends: 420 [2021-11-19 14:01:11,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 299 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=83, Invalid=293, Unknown=4, NotChecked=0, Total=380 [2021-11-19 14:01:11,550 INFO L933 BasicCegarLoop]: 465 mSDtfsCounter, 73 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 3909 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:11,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 3909 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 522 Invalid, 6 Unknown, 79 Unchecked, 15.5s Time] [2021-11-19 14:01:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-19 14:01:11,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 402. [2021-11-19 14:01:11,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 256 states have (on average 1.234375) internal successors, (316), 259 states have internal predecessors, (316), 117 states have call successors, (117), 25 states have call predecessors, (117), 27 states have return successors, (144), 117 states have call predecessors, (144), 115 states have call successors, (144) [2021-11-19 14:01:11,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 577 transitions. [2021-11-19 14:01:11,580 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 577 transitions. Word has length 157 [2021-11-19 14:01:11,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:11,581 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 577 transitions. [2021-11-19 14:01:11,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 5 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-19 14:01:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 577 transitions. [2021-11-19 14:01:11,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-19 14:01:11,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:11,586 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:11,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:11,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:11,801 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:11,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:11,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1115345573, now seen corresponding path program 1 times [2021-11-19 14:01:11,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:11,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868937448] [2021-11-19 14:01:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:11,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:11,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:11,805 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:11,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 14:01:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:13,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:01:13,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-19 14:01:13,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-19 14:01:13,912 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:13,912 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868937448] [2021-11-19 14:01:13,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868937448] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:13,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:13,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-19 14:01:13,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449112598] [2021-11-19 14:01:13,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:13,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 14:01:13,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 14:01:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 14:01:13,916 INFO L87 Difference]: Start difference. First operand 402 states and 577 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:01:14,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:14,112 INFO L93 Difference]: Finished difference Result 779 states and 1159 transitions. [2021-11-19 14:01:14,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 14:01:14,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 157 [2021-11-19 14:01:14,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:14,124 INFO L225 Difference]: With dead ends: 779 [2021-11-19 14:01:14,124 INFO L226 Difference]: Without dead ends: 422 [2021-11-19 14:01:14,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:01:14,131 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 8 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:14,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1980 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:01:14,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-11-19 14:01:14,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 410. [2021-11-19 14:01:14,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 264 states have (on average 1.231060606060606) internal successors, (325), 267 states have internal predecessors, (325), 117 states have call successors, (117), 25 states have call predecessors, (117), 27 states have return successors, (144), 117 states have call predecessors, (144), 115 states have call successors, (144) [2021-11-19 14:01:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 586 transitions. [2021-11-19 14:01:14,164 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 586 transitions. Word has length 157 [2021-11-19 14:01:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:14,165 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 586 transitions. [2021-11-19 14:01:14,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-19 14:01:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 586 transitions. [2021-11-19 14:01:14,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-19 14:01:14,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:14,169 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:14,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:14,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:14,393 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:14,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:14,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1913527722, now seen corresponding path program 1 times [2021-11-19 14:01:14,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:14,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878803374] [2021-11-19 14:01:14,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:14,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:14,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:14,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:14,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 14:01:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:15,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 1508 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-19 14:01:15,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:16,268 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-19 14:01:16,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:16,839 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-19 14:01:16,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:16,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878803374] [2021-11-19 14:01:16,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878803374] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:16,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:16,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 8 [2021-11-19 14:01:16,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901955911] [2021-11-19 14:01:16,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:16,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:01:16,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:16,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:01:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:01:16,841 INFO L87 Difference]: Start difference. First operand 410 states and 586 transitions. Second operand has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:01:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:17,532 INFO L93 Difference]: Finished difference Result 748 states and 1085 transitions. [2021-11-19 14:01:17,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:01:17,534 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 159 [2021-11-19 14:01:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:17,545 INFO L225 Difference]: With dead ends: 748 [2021-11-19 14:01:17,546 INFO L226 Difference]: Without dead ends: 412 [2021-11-19 14:01:17,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:01:17,550 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 99 mSDsluCounter, 2137 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:17,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 2597 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:01:17,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-19 14:01:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2021-11-19 14:01:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 265 states have (on average 1.230188679245283) internal successors, (326), 269 states have internal predecessors, (326), 117 states have call successors, (117), 25 states have call predecessors, (117), 28 states have return successors, (150), 117 states have call predecessors, (150), 115 states have call successors, (150) [2021-11-19 14:01:17,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 593 transitions. [2021-11-19 14:01:17,579 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 593 transitions. Word has length 159 [2021-11-19 14:01:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:17,580 INFO L470 AbstractCegarLoop]: Abstraction has 412 states and 593 transitions. [2021-11-19 14:01:17,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-19 14:01:17,581 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 593 transitions. [2021-11-19 14:01:17,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-19 14:01:17,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:17,584 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:17,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:17,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:17,809 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:17,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:17,810 INFO L85 PathProgramCache]: Analyzing trace with hash 896495818, now seen corresponding path program 1 times [2021-11-19 14:01:17,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:17,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347079492] [2021-11-19 14:01:17,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:17,812 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:17,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:17,813 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:17,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 14:01:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:19,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:01:19,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:19,804 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-19 14:01:19,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2021-11-19 14:01:20,639 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:20,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347079492] [2021-11-19 14:01:20,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347079492] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:20,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:20,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 14 [2021-11-19 14:01:20,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935590389] [2021-11-19 14:01:20,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:20,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:01:20,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:20,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:01:20,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:01:20,642 INFO L87 Difference]: Start difference. First operand 412 states and 593 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-19 14:01:22,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:22,075 INFO L93 Difference]: Finished difference Result 780 states and 1136 transitions. [2021-11-19 14:01:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:22,076 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 175 [2021-11-19 14:01:22,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:22,082 INFO L225 Difference]: With dead ends: 780 [2021-11-19 14:01:22,082 INFO L226 Difference]: Without dead ends: 442 [2021-11-19 14:01:22,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:01:22,087 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 149 mSDsluCounter, 2927 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 3373 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:22,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 3373 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:01:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-19 14:01:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 440. [2021-11-19 14:01:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 292 states have (on average 1.2363013698630136) internal successors, (361), 295 states have internal predecessors, (361), 118 states have call successors, (118), 25 states have call predecessors, (118), 28 states have return successors, (151), 119 states have call predecessors, (151), 116 states have call successors, (151) [2021-11-19 14:01:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 630 transitions. [2021-11-19 14:01:22,122 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 630 transitions. Word has length 175 [2021-11-19 14:01:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:22,123 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 630 transitions. [2021-11-19 14:01:22,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-19 14:01:22,123 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 630 transitions. [2021-11-19 14:01:22,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-19 14:01:22,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:22,128 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:22,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:22,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:22,341 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:22,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash -491327218, now seen corresponding path program 1 times [2021-11-19 14:01:22,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:22,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193821002] [2021-11-19 14:01:22,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:22,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:22,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:22,345 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:22,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 14:01:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:24,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 1728 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:01:24,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-11-19 14:01:24,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-19 14:01:25,518 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:25,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193821002] [2021-11-19 14:01:25,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193821002] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:25,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:25,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2021-11-19 14:01:25,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680632500] [2021-11-19 14:01:25,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:25,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:01:25,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:01:25,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:01:25,520 INFO L87 Difference]: Start difference. First operand 440 states and 630 transitions. Second operand has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-19 14:01:26,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:26,629 INFO L93 Difference]: Finished difference Result 814 states and 1189 transitions. [2021-11-19 14:01:26,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:26,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 205 [2021-11-19 14:01:26,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:26,640 INFO L225 Difference]: With dead ends: 814 [2021-11-19 14:01:26,641 INFO L226 Difference]: Without dead ends: 448 [2021-11-19 14:01:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:01:26,649 INFO L933 BasicCegarLoop]: 454 mSDtfsCounter, 122 mSDsluCounter, 2538 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:26,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 2992 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 14:01:26,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-19 14:01:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 440. [2021-11-19 14:01:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 292 states have (on average 1.2363013698630136) internal successors, (361), 295 states have internal predecessors, (361), 118 states have call successors, (118), 25 states have call predecessors, (118), 28 states have return successors, (151), 119 states have call predecessors, (151), 116 states have call successors, (151) [2021-11-19 14:01:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 630 transitions. [2021-11-19 14:01:26,694 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 630 transitions. Word has length 205 [2021-11-19 14:01:26,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:26,695 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 630 transitions. [2021-11-19 14:01:26,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.428571428571429) internal successors, (94), 7 states have internal predecessors, (94), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-19 14:01:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 630 transitions. [2021-11-19 14:01:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-19 14:01:26,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:26,702 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:26,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:26,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:26,918 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:26,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:26,918 INFO L85 PathProgramCache]: Analyzing trace with hash -917760094, now seen corresponding path program 1 times [2021-11-19 14:01:26,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:26,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436881146] [2021-11-19 14:01:26,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:26,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:26,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:26,921 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:26,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 14:01:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:28,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1814 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:01:28,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-11-19 14:01:29,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2021-11-19 14:01:31,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:31,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436881146] [2021-11-19 14:01:31,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436881146] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:31,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:31,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2021-11-19 14:01:31,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477193769] [2021-11-19 14:01:31,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:31,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:01:31,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:31,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:01:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:01:31,026 INFO L87 Difference]: Start difference. First operand 440 states and 630 transitions. Second operand has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-11-19 14:01:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:33,134 INFO L93 Difference]: Finished difference Result 838 states and 1215 transitions. [2021-11-19 14:01:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:01:33,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 237 [2021-11-19 14:01:33,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:33,142 INFO L225 Difference]: With dead ends: 838 [2021-11-19 14:01:33,142 INFO L226 Difference]: Without dead ends: 472 [2021-11-19 14:01:33,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:01:33,147 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 171 mSDsluCounter, 3302 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:33,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 3742 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:01:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-19 14:01:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 410. [2021-11-19 14:01:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 264 states have (on average 1.231060606060606) internal successors, (325), 267 states have internal predecessors, (325), 117 states have call successors, (117), 25 states have call predecessors, (117), 27 states have return successors, (142), 117 states have call predecessors, (142), 115 states have call successors, (142) [2021-11-19 14:01:33,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 584 transitions. [2021-11-19 14:01:33,181 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 584 transitions. Word has length 237 [2021-11-19 14:01:33,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:33,182 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 584 transitions. [2021-11-19 14:01:33,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-11-19 14:01:33,182 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 584 transitions. [2021-11-19 14:01:33,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-19 14:01:33,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:33,189 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:33,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:33,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:33,407 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:33,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:33,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1227683830, now seen corresponding path program 1 times [2021-11-19 14:01:33,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:33,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881883377] [2021-11-19 14:01:33,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:33,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:33,411 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:33,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 14:01:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:35,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 1974 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 14:01:35,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2021-11-19 14:01:36,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-11-19 14:01:37,190 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:37,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881883377] [2021-11-19 14:01:37,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881883377] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:37,190 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:37,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 14:01:37,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712118328] [2021-11-19 14:01:37,191 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:37,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 14:01:37,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:37,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 14:01:37,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:01:37,193 INFO L87 Difference]: Start difference. First operand 410 states and 584 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:01:37,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:37,225 INFO L93 Difference]: Finished difference Result 549 states and 763 transitions. [2021-11-19 14:01:37,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 14:01:37,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 267 [2021-11-19 14:01:37,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:37,232 INFO L225 Difference]: With dead ends: 549 [2021-11-19 14:01:37,232 INFO L226 Difference]: Without dead ends: 411 [2021-11-19 14:01:37,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 14:01:37,234 INFO L933 BasicCegarLoop]: 482 mSDtfsCounter, 0 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:37,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 959 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 14:01:37,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-19 14:01:37,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2021-11-19 14:01:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 265 states have (on average 1.230188679245283) internal successors, (326), 268 states have internal predecessors, (326), 117 states have call successors, (117), 25 states have call predecessors, (117), 27 states have return successors, (142), 117 states have call predecessors, (142), 115 states have call successors, (142) [2021-11-19 14:01:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 585 transitions. [2021-11-19 14:01:37,263 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 585 transitions. Word has length 267 [2021-11-19 14:01:37,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:37,264 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 585 transitions. [2021-11-19 14:01:37,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-19 14:01:37,265 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 585 transitions. [2021-11-19 14:01:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-19 14:01:37,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:37,268 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:37,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:37,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:37,493 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:37,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:37,494 INFO L85 PathProgramCache]: Analyzing trace with hash -236034076, now seen corresponding path program 1 times [2021-11-19 14:01:37,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:37,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784843491] [2021-11-19 14:01:37,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:37,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:37,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:37,497 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:37,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 14:01:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:39,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:01:39,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:40,411 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-19 14:01:40,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-11-19 14:01:41,193 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:41,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784843491] [2021-11-19 14:01:41,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784843491] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:41,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:41,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2021-11-19 14:01:41,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430406472] [2021-11-19 14:01:41,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:41,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:01:41,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:41,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:01:41,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:01:41,196 INFO L87 Difference]: Start difference. First operand 411 states and 585 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-19 14:01:41,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:41,995 INFO L93 Difference]: Finished difference Result 741 states and 1067 transitions. [2021-11-19 14:01:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:01:42,002 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 234 [2021-11-19 14:01:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:42,008 INFO L225 Difference]: With dead ends: 741 [2021-11-19 14:01:42,009 INFO L226 Difference]: Without dead ends: 413 [2021-11-19 14:01:42,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:01:42,013 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 153 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:42,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 3420 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:01:42,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-19 14:01:42,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2021-11-19 14:01:42,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 266 states have (on average 1.2293233082706767) internal successors, (327), 270 states have internal predecessors, (327), 117 states have call successors, (117), 25 states have call predecessors, (117), 28 states have return successors, (146), 117 states have call predecessors, (146), 115 states have call successors, (146) [2021-11-19 14:01:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 590 transitions. [2021-11-19 14:01:42,044 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 590 transitions. Word has length 234 [2021-11-19 14:01:42,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:42,045 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 590 transitions. [2021-11-19 14:01:42,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 5 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2021-11-19 14:01:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 590 transitions. [2021-11-19 14:01:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-19 14:01:42,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:42,050 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:42,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:42,273 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:42,273 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:42,274 INFO L85 PathProgramCache]: Analyzing trace with hash -598640710, now seen corresponding path program 1 times [2021-11-19 14:01:42,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:42,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800608897] [2021-11-19 14:01:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:42,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:42,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:42,277 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:42,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 14:01:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:44,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:01:44,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:45,257 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2021-11-19 14:01:45,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:46,505 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2021-11-19 14:01:46,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:46,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800608897] [2021-11-19 14:01:46,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800608897] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:46,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:46,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 18 [2021-11-19 14:01:46,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577831850] [2021-11-19 14:01:46,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:46,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:01:46,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:46,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:01:46,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:01:46,509 INFO L87 Difference]: Start difference. First operand 413 states and 590 transitions. Second operand has 11 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-19 14:01:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:47,994 INFO L93 Difference]: Finished difference Result 773 states and 1114 transitions. [2021-11-19 14:01:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:01:47,995 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) Word has length 250 [2021-11-19 14:01:47,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:48,001 INFO L225 Difference]: With dead ends: 773 [2021-11-19 14:01:48,001 INFO L226 Difference]: Without dead ends: 443 [2021-11-19 14:01:48,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-11-19 14:01:48,006 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 188 mSDsluCounter, 3832 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:48,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 4290 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:01:48,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-19 14:01:48,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 441. [2021-11-19 14:01:48,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 293 states have (on average 1.235494880546075) internal successors, (362), 296 states have internal predecessors, (362), 118 states have call successors, (118), 25 states have call predecessors, (118), 28 states have return successors, (147), 119 states have call predecessors, (147), 116 states have call successors, (147) [2021-11-19 14:01:48,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 627 transitions. [2021-11-19 14:01:48,041 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 627 transitions. Word has length 250 [2021-11-19 14:01:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:48,042 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 627 transitions. [2021-11-19 14:01:48,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 6 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-19 14:01:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 627 transitions. [2021-11-19 14:01:48,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-19 14:01:48,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:48,047 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:48,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:48,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:48,265 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:48,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:48,266 INFO L85 PathProgramCache]: Analyzing trace with hash -813347676, now seen corresponding path program 1 times [2021-11-19 14:01:48,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:48,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411190057] [2021-11-19 14:01:48,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:48,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:48,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:48,269 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:48,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 14:01:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:51,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 2029 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:01:51,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:51,831 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2021-11-19 14:01:51,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 504 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-11-19 14:01:52,787 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:52,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [411190057] [2021-11-19 14:01:52,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [411190057] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:01:52,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:01:52,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 12 [2021-11-19 14:01:52,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279649049] [2021-11-19 14:01:52,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:52,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:01:52,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:01:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:01:52,790 INFO L87 Difference]: Start difference. First operand 441 states and 627 transitions. Second operand has 10 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-19 14:01:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:54,299 INFO L93 Difference]: Finished difference Result 807 states and 1163 transitions. [2021-11-19 14:01:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:01:54,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 280 [2021-11-19 14:01:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:54,309 INFO L225 Difference]: With dead ends: 807 [2021-11-19 14:01:54,310 INFO L226 Difference]: Without dead ends: 449 [2021-11-19 14:01:54,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 566 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:01:54,316 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 176 mSDsluCounter, 3349 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 3799 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:54,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 3799 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:01:54,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-19 14:01:54,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 441. [2021-11-19 14:01:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 293 states have (on average 1.235494880546075) internal successors, (362), 296 states have internal predecessors, (362), 118 states have call successors, (118), 25 states have call predecessors, (118), 28 states have return successors, (147), 119 states have call predecessors, (147), 116 states have call successors, (147) [2021-11-19 14:01:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 627 transitions. [2021-11-19 14:01:54,353 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 627 transitions. Word has length 280 [2021-11-19 14:01:54,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:54,354 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 627 transitions. [2021-11-19 14:01:54,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.0) internal successors, (99), 8 states have internal predecessors, (99), 6 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-19 14:01:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 627 transitions. [2021-11-19 14:01:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-19 14:01:54,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:54,359 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:54,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:54,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:54,586 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:54,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:54,586 INFO L85 PathProgramCache]: Analyzing trace with hash -731298320, now seen corresponding path program 1 times [2021-11-19 14:01:54,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:54,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456246719] [2021-11-19 14:01:54,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:54,589 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:54,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:54,590 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:54,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 14:01:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:01:56,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 14:01:56,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:01:57,572 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-19 14:01:57,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:01:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2021-11-19 14:01:58,423 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:01:58,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456246719] [2021-11-19 14:01:58,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456246719] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:01:58,423 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:01:58,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 9 [2021-11-19 14:01:58,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994571794] [2021-11-19 14:01:58,424 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:01:58,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 14:01:58,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:01:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 14:01:58,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:01:58,426 INFO L87 Difference]: Start difference. First operand 441 states and 627 transitions. Second operand has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-19 14:01:59,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:01:59,102 INFO L93 Difference]: Finished difference Result 771 states and 1100 transitions. [2021-11-19 14:01:59,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:01:59,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) Word has length 250 [2021-11-19 14:01:59,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:01:59,108 INFO L225 Difference]: With dead ends: 771 [2021-11-19 14:01:59,108 INFO L226 Difference]: Without dead ends: 448 [2021-11-19 14:01:59,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-19 14:01:59,112 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 122 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 14:01:59,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 3019 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 14:01:59,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-19 14:01:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 443. [2021-11-19 14:01:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 294 states have (on average 1.2346938775510203) internal successors, (363), 298 states have internal predecessors, (363), 118 states have call successors, (118), 25 states have call predecessors, (118), 29 states have return successors, (149), 119 states have call predecessors, (149), 116 states have call successors, (149) [2021-11-19 14:01:59,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 630 transitions. [2021-11-19 14:01:59,147 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 630 transitions. Word has length 250 [2021-11-19 14:01:59,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:01:59,148 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 630 transitions. [2021-11-19 14:01:59,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 5 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (30), 4 states have call predecessors, (30), 5 states have call successors, (30) [2021-11-19 14:01:59,148 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 630 transitions. [2021-11-19 14:01:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-19 14:01:59,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:01:59,152 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:01:59,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 14:01:59,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:01:59,377 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:01:59,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:01:59,378 INFO L85 PathProgramCache]: Analyzing trace with hash 514261413, now seen corresponding path program 1 times [2021-11-19 14:01:59,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:01:59,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1213755218] [2021-11-19 14:01:59,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:01:59,380 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:01:59,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:01:59,381 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:01:59,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 14:02:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:01,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 1870 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:02:01,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 178 proven. 0 refuted. 0 times theorem prover too weak. 267 trivial. 0 not checked. [2021-11-19 14:02:02,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:03,681 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-11-19 14:02:03,682 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:03,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1213755218] [2021-11-19 14:02:03,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1213755218] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:03,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:03,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 16 [2021-11-19 14:02:03,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116496561] [2021-11-19 14:02:03,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:03,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:02:03,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:02:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:02:03,686 INFO L87 Difference]: Start difference. First operand 443 states and 630 transitions. Second operand has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-19 14:02:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:05,205 INFO L93 Difference]: Finished difference Result 776 states and 1107 transitions. [2021-11-19 14:02:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:02:05,206 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) Word has length 258 [2021-11-19 14:02:05,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:05,212 INFO L225 Difference]: With dead ends: 776 [2021-11-19 14:02:05,212 INFO L226 Difference]: Without dead ends: 451 [2021-11-19 14:02:05,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-11-19 14:02:05,216 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 156 mSDsluCounter, 3437 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 3898 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:05,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 3898 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:02:05,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-19 14:02:05,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 444. [2021-11-19 14:02:05,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 295 states have (on average 1.2338983050847459) internal successors, (364), 299 states have internal predecessors, (364), 118 states have call successors, (118), 25 states have call predecessors, (118), 29 states have return successors, (149), 119 states have call predecessors, (149), 116 states have call successors, (149) [2021-11-19 14:02:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 631 transitions. [2021-11-19 14:02:05,252 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 631 transitions. Word has length 258 [2021-11-19 14:02:05,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:05,253 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 631 transitions. [2021-11-19 14:02:05,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 6 states have call successors, (28), 3 states have call predecessors, (28), 4 states have return successors, (25), 5 states have call predecessors, (25), 6 states have call successors, (25) [2021-11-19 14:02:05,254 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 631 transitions. [2021-11-19 14:02:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2021-11-19 14:02:05,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:05,258 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:05,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:05,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:05,481 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:05,482 INFO L85 PathProgramCache]: Analyzing trace with hash 48572004, now seen corresponding path program 2 times [2021-11-19 14:02:05,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:05,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950476063] [2021-11-19 14:02:05,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:02:05,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:05,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:05,487 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:05,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 14:02:15,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:02:15,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:02:15,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:02:15,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-11-19 14:02:16,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:17,227 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2021-11-19 14:02:17,227 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:17,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950476063] [2021-11-19 14:02:17,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950476063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:17,227 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:17,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-11-19 14:02:17,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730229500] [2021-11-19 14:02:17,228 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:17,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:17,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:17,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:02:17,230 INFO L87 Difference]: Start difference. First operand 444 states and 631 transitions. Second operand has 11 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2021-11-19 14:02:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:18,635 INFO L93 Difference]: Finished difference Result 780 states and 1110 transitions. [2021-11-19 14:02:18,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:02:18,636 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) Word has length 273 [2021-11-19 14:02:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:18,642 INFO L225 Difference]: With dead ends: 780 [2021-11-19 14:02:18,642 INFO L226 Difference]: Without dead ends: 454 [2021-11-19 14:02:18,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 538 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:02:18,647 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 164 mSDsluCounter, 3399 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 3855 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:18,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 3855 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 14:02:18,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-19 14:02:18,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 441. [2021-11-19 14:02:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 293 states have (on average 1.235494880546075) internal successors, (362), 296 states have internal predecessors, (362), 118 states have call successors, (118), 25 states have call predecessors, (118), 28 states have return successors, (145), 119 states have call predecessors, (145), 116 states have call successors, (145) [2021-11-19 14:02:18,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 625 transitions. [2021-11-19 14:02:18,686 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 625 transitions. Word has length 273 [2021-11-19 14:02:18,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:18,687 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 625 transitions. [2021-11-19 14:02:18,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.8) internal successors, (88), 10 states have internal predecessors, (88), 7 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2021-11-19 14:02:18,688 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 625 transitions. [2021-11-19 14:02:18,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-11-19 14:02:18,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:18,693 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:18,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:18,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:18,910 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:18,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:18,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1255427866, now seen corresponding path program 1 times [2021-11-19 14:02:18,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:18,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166517402] [2021-11-19 14:02:18,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:18,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:18,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:18,917 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:18,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 14:02:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:21,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 1993 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 14:02:21,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:22,969 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2021-11-19 14:02:22,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 557 backedges. 53 proven. 6 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-19 14:02:24,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:24,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166517402] [2021-11-19 14:02:24,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166517402] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:24,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:24,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 18 [2021-11-19 14:02:24,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194846872] [2021-11-19 14:02:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:24,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 14:02:24,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:24,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 14:02:24,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-11-19 14:02:24,470 INFO L87 Difference]: Start difference. First operand 441 states and 625 transitions. Second operand has 11 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 7 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-19 14:02:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:26,584 INFO L93 Difference]: Finished difference Result 801 states and 1135 transitions. [2021-11-19 14:02:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:02:26,594 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 7 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) Word has length 289 [2021-11-19 14:02:26,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:26,599 INFO L225 Difference]: With dead ends: 801 [2021-11-19 14:02:26,599 INFO L226 Difference]: Without dead ends: 478 [2021-11-19 14:02:26,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 563 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-11-19 14:02:26,604 INFO L933 BasicCegarLoop]: 442 mSDtfsCounter, 190 mSDsluCounter, 3727 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 4169 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:26,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 4169 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-11-19 14:02:26,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-19 14:02:26,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 441. [2021-11-19 14:02:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 293 states have (on average 1.235494880546075) internal successors, (362), 296 states have internal predecessors, (362), 118 states have call successors, (118), 25 states have call predecessors, (118), 28 states have return successors, (143), 119 states have call predecessors, (143), 116 states have call successors, (143) [2021-11-19 14:02:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 623 transitions. [2021-11-19 14:02:26,667 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 623 transitions. Word has length 289 [2021-11-19 14:02:26,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:26,670 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 623 transitions. [2021-11-19 14:02:26,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.7) internal successors, (97), 10 states have internal predecessors, (97), 7 states have call successors, (29), 3 states have call predecessors, (29), 4 states have return successors, (26), 6 states have call predecessors, (26), 7 states have call successors, (26) [2021-11-19 14:02:26,671 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 623 transitions. [2021-11-19 14:02:26,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-19 14:02:26,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:26,680 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:26,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:26,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:26,894 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:26,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2087493799, now seen corresponding path program 2 times [2021-11-19 14:02:26,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:26,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042365182] [2021-11-19 14:02:26,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 14:02:26,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:26,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:26,899 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:26,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 14:02:37,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 14:02:37,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 14:02:37,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 2073 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:02:37,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:38,304 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2021-11-19 14:02:38,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:39,409 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 611 trivial. 0 not checked. [2021-11-19 14:02:39,409 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:39,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042365182] [2021-11-19 14:02:39,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042365182] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:39,409 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:39,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 17 [2021-11-19 14:02:39,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799781247] [2021-11-19 14:02:39,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:39,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 14:02:39,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:39,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 14:02:39,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-19 14:02:39,412 INFO L87 Difference]: Start difference. First operand 441 states and 623 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 13 states have internal predecessors, (100), 10 states have call successors, (47), 6 states have call predecessors, (47), 2 states have return successors, (42), 10 states have call predecessors, (42), 9 states have call successors, (42) [2021-11-19 14:02:40,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:40,909 INFO L93 Difference]: Finished difference Result 776 states and 1101 transitions. [2021-11-19 14:02:40,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 14:02:40,910 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 13 states have internal predecessors, (100), 10 states have call successors, (47), 6 states have call predecessors, (47), 2 states have return successors, (42), 10 states have call predecessors, (42), 9 states have call successors, (42) Word has length 304 [2021-11-19 14:02:40,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:40,915 INFO L225 Difference]: With dead ends: 776 [2021-11-19 14:02:40,915 INFO L226 Difference]: Without dead ends: 458 [2021-11-19 14:02:40,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2021-11-19 14:02:40,918 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 176 mSDsluCounter, 5250 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 5710 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:40,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 5710 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 14:02:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-19 14:02:40,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 453. [2021-11-19 14:02:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 299 states have (on average 1.234113712374582) internal successors, (369), 302 states have internal predecessors, (369), 123 states have call successors, (123), 26 states have call predecessors, (123), 29 states have return successors, (148), 124 states have call predecessors, (148), 121 states have call successors, (148) [2021-11-19 14:02:40,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 640 transitions. [2021-11-19 14:02:40,947 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 640 transitions. Word has length 304 [2021-11-19 14:02:40,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:40,948 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 640 transitions. [2021-11-19 14:02:40,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 13 states have internal predecessors, (100), 10 states have call successors, (47), 6 states have call predecessors, (47), 2 states have return successors, (42), 10 states have call predecessors, (42), 9 states have call successors, (42) [2021-11-19 14:02:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 640 transitions. [2021-11-19 14:02:40,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-19 14:02:40,953 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:40,953 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:41,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:41,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:41,177 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:41,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:41,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1580345582, now seen corresponding path program 1 times [2021-11-19 14:02:41,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:41,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [449268196] [2021-11-19 14:02:41,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:41,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:41,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:41,182 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:41,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 14:02:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:44,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 2275 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:02:44,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2021-11-19 14:02:45,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:46,323 INFO L134 CoverageAnalysis]: Checked inductivity of 811 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 811 trivial. 0 not checked. [2021-11-19 14:02:46,324 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:46,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [449268196] [2021-11-19 14:02:46,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [449268196] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 14:02:46,325 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 14:02:46,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-19 14:02:46,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053698333] [2021-11-19 14:02:46,325 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:46,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 14:02:46,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:46,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 14:02:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:02:46,328 INFO L87 Difference]: Start difference. First operand 453 states and 640 transitions. Second operand has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 14:02:46,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:02:46,617 INFO L93 Difference]: Finished difference Result 836 states and 1197 transitions. [2021-11-19 14:02:46,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 14:02:46,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 342 [2021-11-19 14:02:46,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:02:46,622 INFO L225 Difference]: With dead ends: 836 [2021-11-19 14:02:46,622 INFO L226 Difference]: Without dead ends: 493 [2021-11-19 14:02:46,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 684 GetRequests, 677 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 14:02:46,625 INFO L933 BasicCegarLoop]: 526 mSDtfsCounter, 103 mSDsluCounter, 1983 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:02:46,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 2509 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:02:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-11-19 14:02:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 456. [2021-11-19 14:02:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 302 states have (on average 1.2317880794701987) internal successors, (372), 305 states have internal predecessors, (372), 123 states have call successors, (123), 26 states have call predecessors, (123), 29 states have return successors, (148), 124 states have call predecessors, (148), 121 states have call successors, (148) [2021-11-19 14:02:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 643 transitions. [2021-11-19 14:02:46,661 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 643 transitions. Word has length 342 [2021-11-19 14:02:46,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:02:46,662 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 643 transitions. [2021-11-19 14:02:46,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 4 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2021-11-19 14:02:46,662 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 643 transitions. [2021-11-19 14:02:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2021-11-19 14:02:46,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:02:46,667 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:02:46,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-19 14:02:46,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:02:46,889 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:02:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:02:46,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1604688605, now seen corresponding path program 1 times [2021-11-19 14:02:46,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:02:46,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354595298] [2021-11-19 14:02:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:02:46,893 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:02:46,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:02:46,894 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:02:46,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 14:02:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:02:53,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 2233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 14:02:53,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:02:54,373 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 14:02:54,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 132 treesize of output 36 [2021-11-19 14:02:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2021-11-19 14:02:55,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:02:57,310 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 12 proven. 18 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2021-11-19 14:02:57,310 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:02:57,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354595298] [2021-11-19 14:02:57,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354595298] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:02:57,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:02:57,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2021-11-19 14:02:57,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250965096] [2021-11-19 14:02:57,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:02:57,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:02:57,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:02:57,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:02:57,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-19 14:02:57,312 INFO L87 Difference]: Start difference. First operand 456 states and 643 transitions. Second operand has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-19 14:02:59,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:03:01,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 14:03:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:05,590 INFO L93 Difference]: Finished difference Result 844 states and 1201 transitions. [2021-11-19 14:03:05,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 14:03:05,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) Word has length 334 [2021-11-19 14:03:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:05,596 INFO L225 Difference]: With dead ends: 844 [2021-11-19 14:03:05,597 INFO L226 Difference]: Without dead ends: 459 [2021-11-19 14:03:05,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 669 GetRequests, 654 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-19 14:03:05,600 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 6 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:05,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2550 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 307 Invalid, 2 Unknown, 38 Unchecked, 7.8s Time] [2021-11-19 14:03:05,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-11-19 14:03:05,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 458. [2021-11-19 14:03:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 304 states have (on average 1.230263157894737) internal successors, (374), 307 states have internal predecessors, (374), 123 states have call successors, (123), 26 states have call predecessors, (123), 29 states have return successors, (148), 124 states have call predecessors, (148), 121 states have call successors, (148) [2021-11-19 14:03:05,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 645 transitions. [2021-11-19 14:03:05,629 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 645 transitions. Word has length 334 [2021-11-19 14:03:05,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:05,629 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 645 transitions. [2021-11-19 14:03:05,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 15.428571428571429) internal successors, (108), 8 states have internal predecessors, (108), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-19 14:03:05,630 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 645 transitions. [2021-11-19 14:03:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-19 14:03:05,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:05,634 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:05,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:05,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:05,853 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:03:05,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:05,854 INFO L85 PathProgramCache]: Analyzing trace with hash 969867934, now seen corresponding path program 1 times [2021-11-19 14:03:05,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:05,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659215786] [2021-11-19 14:03:05,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:05,857 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:05,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:05,858 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:05,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 14:03:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:08,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 14:03:08,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:09,170 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-11-19 14:03:09,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:10,104 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-11-19 14:03:10,104 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:10,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659215786] [2021-11-19 14:03:10,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659215786] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:10,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:03:10,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 14:03:10,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040867047] [2021-11-19 14:03:10,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:10,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 14:03:10,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:10,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 14:03:10,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 14:03:10,108 INFO L87 Difference]: Start difference. First operand 458 states and 645 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:03:10,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:10,253 INFO L93 Difference]: Finished difference Result 879 states and 1275 transitions. [2021-11-19 14:03:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 14:03:10,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 339 [2021-11-19 14:03:10,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:10,261 INFO L225 Difference]: With dead ends: 879 [2021-11-19 14:03:10,261 INFO L226 Difference]: Without dead ends: 463 [2021-11-19 14:03:10,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 14:03:10,266 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 7 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:10,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1424 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 14:03:10,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-11-19 14:03:10,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 459. [2021-11-19 14:03:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 305 states have (on average 1.2295081967213115) internal successors, (375), 308 states have internal predecessors, (375), 123 states have call successors, (123), 26 states have call predecessors, (123), 29 states have return successors, (148), 124 states have call predecessors, (148), 121 states have call successors, (148) [2021-11-19 14:03:10,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 646 transitions. [2021-11-19 14:03:10,316 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 646 transitions. Word has length 339 [2021-11-19 14:03:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:10,317 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 646 transitions. [2021-11-19 14:03:10,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-19 14:03:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 646 transitions. [2021-11-19 14:03:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-19 14:03:10,323 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:10,323 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:10,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:10,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:10,548 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:03:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:10,549 INFO L85 PathProgramCache]: Analyzing trace with hash -295383737, now seen corresponding path program 1 times [2021-11-19 14:03:10,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:10,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259453799] [2021-11-19 14:03:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:10,553 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:10,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:10,555 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:10,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 14:03:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:12,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 14:03:12,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2021-11-19 14:03:13,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 789 trivial. 0 not checked. [2021-11-19 14:03:14,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:14,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259453799] [2021-11-19 14:03:14,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259453799] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 14:03:14,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 14:03:14,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2021-11-19 14:03:14,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981978116] [2021-11-19 14:03:14,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 14:03:14,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 14:03:14,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:14,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 14:03:14,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 14:03:14,876 INFO L87 Difference]: Start difference. First operand 459 states and 646 transitions. Second operand has 10 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-19 14:03:15,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:15,674 INFO L93 Difference]: Finished difference Result 892 states and 1271 transitions. [2021-11-19 14:03:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 14:03:15,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 339 [2021-11-19 14:03:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:15,682 INFO L225 Difference]: With dead ends: 892 [2021-11-19 14:03:15,683 INFO L226 Difference]: Without dead ends: 478 [2021-11-19 14:03:15,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 679 GetRequests, 667 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-19 14:03:15,688 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 4 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4084 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:15,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4084 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 14:03:15,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-19 14:03:15,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 466. [2021-11-19 14:03:15,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 310 states have (on average 1.2258064516129032) internal successors, (380), 314 states have internal predecessors, (380), 123 states have call successors, (123), 26 states have call predecessors, (123), 31 states have return successors, (162), 125 states have call predecessors, (162), 121 states have call successors, (162) [2021-11-19 14:03:15,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 665 transitions. [2021-11-19 14:03:15,725 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 665 transitions. Word has length 339 [2021-11-19 14:03:15,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:15,726 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 665 transitions. [2021-11-19 14:03:15,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.333333333333334) internal successors, (111), 8 states have internal predecessors, (111), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-19 14:03:15,726 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 665 transitions. [2021-11-19 14:03:15,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-19 14:03:15,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:15,731 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:15,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:15,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 14:03:15,957 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:03:15,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 504167790, now seen corresponding path program 1 times [2021-11-19 14:03:15,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:15,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011864047] [2021-11-19 14:03:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:15,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:15,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:15,962 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:15,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 14:03:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:18,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 2251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:03:18,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 356 proven. 1 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-11-19 14:03:18,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:20,027 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-11-19 14:03:20,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 14:03:20,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011864047] [2021-11-19 14:03:20,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011864047] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:20,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1261386752] [2021-11-19 14:03:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:20,028 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 14:03:20,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 14:03:20,034 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 14:03:20,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2021-11-19 14:03:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:23,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 2251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:03:23,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 356 proven. 1 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-11-19 14:03:24,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:25,716 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-11-19 14:03:25,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1261386752] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:25,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882308002] [2021-11-19 14:03:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:25,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 14:03:25,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 14:03:25,723 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 14:03:25,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-19 14:03:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:27,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 14:03:27,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 356 proven. 1 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2021-11-19 14:03:28,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:03:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 819 trivial. 0 not checked. [2021-11-19 14:03:29,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882308002] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 14:03:29,819 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 14:03:29,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-11-19 14:03:29,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954612607] [2021-11-19 14:03:29,820 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 14:03:29,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 14:03:29,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 14:03:29,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 14:03:29,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 14:03:29,824 INFO L87 Difference]: Start difference. First operand 466 states and 665 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:03:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 14:03:30,255 INFO L93 Difference]: Finished difference Result 908 states and 1344 transitions. [2021-11-19 14:03:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 14:03:30,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) Word has length 342 [2021-11-19 14:03:30,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 14:03:30,260 INFO L225 Difference]: With dead ends: 908 [2021-11-19 14:03:30,260 INFO L226 Difference]: Without dead ends: 481 [2021-11-19 14:03:30,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2048 GetRequests, 2040 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-19 14:03:30,264 INFO L933 BasicCegarLoop]: 480 mSDtfsCounter, 37 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 14:03:30,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 1441 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 14:03:30,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-11-19 14:03:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 475. [2021-11-19 14:03:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 319 states have (on average 1.2288401253918495) internal successors, (392), 323 states have internal predecessors, (392), 123 states have call successors, (123), 26 states have call predecessors, (123), 31 states have return successors, (162), 125 states have call predecessors, (162), 121 states have call successors, (162) [2021-11-19 14:03:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 677 transitions. [2021-11-19 14:03:30,315 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 677 transitions. Word has length 342 [2021-11-19 14:03:30,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 14:03:30,316 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 677 transitions. [2021-11-19 14:03:30,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (42), 2 states have call predecessors, (42), 2 states have call successors, (42) [2021-11-19 14:03:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 677 transitions. [2021-11-19 14:03:30,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2021-11-19 14:03:30,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 14:03:30,322 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 14:03:30,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:30,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-11-19 14:03:30,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2021-11-19 14:03:30,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 14:03:30,944 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 14:03:30,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 14:03:30,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1521322918, now seen corresponding path program 1 times [2021-11-19 14:03:30,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 14:03:30,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977543783] [2021-11-19 14:03:30,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 14:03:30,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 14:03:30,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 14:03:30,966 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 14:03:30,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17afd213-d3d6-42be-a2c0-31dd575337c8/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 14:03:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 14:03:41,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 14:03:41,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 14:03:42,299 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-19 14:03:42,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 65 treesize of output 17 [2021-11-19 14:03:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 476 trivial. 0 not checked. [2021-11-19 14:03:43,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 14:05:18,775 WARN L227 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 101 DAG size of output: 93 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-19 14:05:30,969 WARN L227 SmtUtils]: Spent 11.03s on a formula simplification. DAG size of input: 526 DAG size of output: 272 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-19 14:05:30,971 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-19 14:05:30,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 132 treesize of output 771