./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7 --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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:37:37,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:37:37,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:37:37,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:37:37,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:37:37,213 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:37:37,216 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:37:37,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:37:37,225 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:37:37,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:37:37,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:37:37,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:37:37,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:37:37,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:37:37,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:37:37,242 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:37:37,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:37:37,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:37:37,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:37:37,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:37:37,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:37:37,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:37:37,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:37:37,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:37:37,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:37:37,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:37:37,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:37:37,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:37:37,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:37:37,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:37:37,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:37:37,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:37:37,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:37:37,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:37:37,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:37:37,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:37:37,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:37:37,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:37:37,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:37:37,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:37:37,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:37:37,272 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-25 18:37:37,297 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:37:37,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:37:37,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:37:37,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:37:37,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:37:37,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:37:37,302 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:37:37,303 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:37:37,303 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:37:37,303 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 18:37:37,303 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:37:37,303 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:37:37,304 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 18:37:37,304 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 18:37:37,304 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:37:37,304 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 18:37:37,304 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 18:37:37,304 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 18:37:37,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:37:37,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 18:37:37,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:37:37,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:37:37,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:37:37,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:37:37,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:37:37,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:37:37,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:37:37,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:37:37,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:37:37,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:37,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:37:37,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:37:37,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:37:37,308 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 18:37:37,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 18:37:37,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:37:37,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:37:37,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:37:37,318 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2021-11-25 18:37:37,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:37:37,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:37:37,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:37:37,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:37:37,661 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:37:37,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-25 18:37:37,729 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data/e774d0475/554948a0ec4b4a2b83d359535029f08c/FLAG9f9bbb646 [2021-11-25 18:37:38,558 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:37:38,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-25 18:37:38,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data/e774d0475/554948a0ec4b4a2b83d359535029f08c/FLAG9f9bbb646 [2021-11-25 18:37:39,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data/e774d0475/554948a0ec4b4a2b83d359535029f08c [2021-11-25 18:37:39,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:37:39,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:37:39,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:39,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:37:39,108 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:37:39,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:39" (1/1) ... [2021-11-25 18:37:39,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1346b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:39, skipping insertion in model container [2021-11-25 18:37:39,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:37:39" (1/1) ... [2021-11-25 18:37:39,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:37:39,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:37:39,558 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-25 18:37:39,565 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-25 18:37:40,547 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,548 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,568 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,571 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,573 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,575 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:40,576 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,018 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:37:41,019 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:37:41,020 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:37:41,022 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:37:41,023 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:37:41,024 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:37:41,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:37:41,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:37:41,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:37:41,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:37:41,256 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:37:41,377 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,389 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,466 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,469 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,470 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,471 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,488 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,490 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:41,546 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:37:41,560 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-25 18:37:41,561 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-25 18:37:41,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,602 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,609 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,610 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,611 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,613 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,650 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:37:41,651 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:37:41,652 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:37:41,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:37:41,653 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:37:41,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:37:41,654 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:37:41,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:37:41,655 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:37:41,656 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:37:41,676 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:37:41,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,750 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,751 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,753 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,754 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,754 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,764 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,769 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,770 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,778 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:37:41,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:37:42,094 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:37:42,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42 WrapperNode [2021-11-25 18:37:42,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:37:42,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:42,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:37:42,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:37:42,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,332 INFO L137 Inliner]: procedures = 697, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1033 [2021-11-25 18:37:42,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:37:42,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:37:42,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:37:42,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:37:42,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,488 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:37:42,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:37:42,526 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:37:42,526 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:37:42,527 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (1/1) ... [2021-11-25 18:37:42,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:37:42,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:42,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:37:42,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:37:42,616 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-25 18:37:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-25 18:37:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-25 18:37:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-25 18:37:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:37:42,617 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-25 18:37:42,617 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-25 18:37:42,618 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-25 18:37:42,618 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-25 18:37:42,618 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 18:37:42,619 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 18:37:42,619 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-25 18:37:42,620 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-25 18:37:42,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-25 18:37:42,624 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 18:37:42,624 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-25 18:37:42,625 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-25 18:37:42,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:37:42,625 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:37:42,626 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-25 18:37:42,627 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-25 18:37:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:37:42,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:37:42,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:37:42,634 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-25 18:37:42,634 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-25 18:37:42,634 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-25 18:37:42,634 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-25 18:37:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:37:42,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:37:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 18:37:42,635 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 18:37:42,635 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-25 18:37:42,635 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-25 18:37:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:37:42,636 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-25 18:37:42,636 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-25 18:37:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-25 18:37:42,637 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-25 18:37:42,637 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-25 18:37:42,637 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-25 18:37:42,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:37:42,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:37:42,638 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:37:42,638 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:37:42,638 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-25 18:37:42,638 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-25 18:37:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-25 18:37:42,639 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-25 18:37:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:37:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:37:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:37:42,639 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-25 18:37:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-25 18:37:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 18:37:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 18:37:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-25 18:37:42,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-25 18:37:42,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 18:37:42,641 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-25 18:37:42,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-25 18:37:42,641 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-25 18:37:42,641 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-25 18:37:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:37:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-25 18:37:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 18:37:42,642 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-25 18:37:42,642 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-25 18:37:43,114 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:37:43,118 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:37:45,812 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:37:46,026 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:37:46,026 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 18:37:46,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:37:46 BoogieIcfgContainer [2021-11-25 18:37:46,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:37:46,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:37:46,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:37:46,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:37:46,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:37:39" (1/3) ... [2021-11-25 18:37:46,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7982a39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:37:46, skipping insertion in model container [2021-11-25 18:37:46,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:37:42" (2/3) ... [2021-11-25 18:37:46,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7982a39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:37:46, skipping insertion in model container [2021-11-25 18:37:46,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:37:46" (3/3) ... [2021-11-25 18:37:46,038 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2021-11-25 18:37:46,043 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:37:46,043 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:37:46,093 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:37:46,100 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 [2021-11-25 18:37:46,100 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:37:46,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 377 states, 192 states have (on average 1.2083333333333333) internal successors, (232), 195 states have internal predecessors, (232), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2021-11-25 18:37:46,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-25 18:37:46,141 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:46,142 INFO L514 BasicCegarLoop]: trace histogram [9, 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] [2021-11-25 18:37:46,143 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:37:46,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1860970999, now seen corresponding path program 1 times [2021-11-25 18:37:46,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:46,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255639443] [2021-11-25 18:37:46,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:46,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-11-25 18:37:46,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:46,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255639443] [2021-11-25 18:37:46,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255639443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:37:46,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431544004] [2021-11-25 18:37:46,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:46,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:46,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:47,003 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:37:47,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 18:37:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:47,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 2416 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 18:37:47,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:37:48,033 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-25 18:37:48,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:37:48,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431544004] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:48,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:37:48,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-25 18:37:48,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486555617] [2021-11-25 18:37:48,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:48,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:37:48,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:37:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:37:48,083 INFO L87 Difference]: Start difference. First operand has 377 states, 192 states have (on average 1.2083333333333333) internal successors, (232), 195 states have internal predecessors, (232), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 18:37:50,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:50,552 INFO L93 Difference]: Finished difference Result 725 states and 1115 transitions. [2021-11-25 18:37:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:37:50,554 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 101 [2021-11-25 18:37:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:50,571 INFO L225 Difference]: With dead ends: 725 [2021-11-25 18:37:50,582 INFO L226 Difference]: Without dead ends: 376 [2021-11-25 18:37:50,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:37:50,618 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 40 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:50,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1782 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-25 18:37:50,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-25 18:37:50,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-11-25 18:37:50,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 191 states have (on average 1.193717277486911) internal successors, (228), 195 states have internal predecessors, (228), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (167), 154 states have call predecessors, (167), 154 states have call successors, (167) [2021-11-25 18:37:50,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 551 transitions. [2021-11-25 18:37:50,781 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 551 transitions. Word has length 101 [2021-11-25 18:37:50,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:50,782 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 551 transitions. [2021-11-25 18:37:50,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 18:37:50,782 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 551 transitions. [2021-11-25 18:37:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-25 18:37:50,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:50,789 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:50,826 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 18:37:51,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 18:37:51,010 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:37:51,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:51,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2046021411, now seen corresponding path program 1 times [2021-11-25 18:37:51,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:51,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842665081] [2021-11-25 18:37:51,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:51,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:51,313 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-25 18:37:51,314 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842665081] [2021-11-25 18:37:51,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842665081] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 18:37:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060172917] [2021-11-25 18:37:51,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:51,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:51,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:51,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:37:51,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 18:37:51,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:51,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2466 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:37:51,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:37:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-25 18:37:52,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:37:52,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060172917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:52,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 18:37:52,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2021-11-25 18:37:52,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887178204] [2021-11-25 18:37:52,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:52,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:37:52,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:37:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:37:52,252 INFO L87 Difference]: Start difference. First operand 376 states and 551 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-25 18:37:55,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:37:55,931 INFO L93 Difference]: Finished difference Result 735 states and 1109 transitions. [2021-11-25 18:37:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:37:55,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 109 [2021-11-25 18:37:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:37:55,940 INFO L225 Difference]: With dead ends: 735 [2021-11-25 18:37:55,940 INFO L226 Difference]: Without dead ends: 389 [2021-11-25 18:37:55,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:37:55,966 INFO L933 BasicCegarLoop]: 452 mSDtfsCounter, 55 mSDsluCounter, 2346 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2590 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:37:55,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 2590 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-11-25 18:37:55,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-25 18:37:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 387. [2021-11-25 18:37:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-11-25 18:37:56,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2021-11-25 18:37:56,091 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 109 [2021-11-25 18:37:56,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:37:56,092 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2021-11-25 18:37:56,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-25 18:37:56,092 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2021-11-25 18:37:56,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-25 18:37:56,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:37:56,096 INFO L514 BasicCegarLoop]: trace histogram [9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:37:56,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:37:56,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:56,311 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:37:56,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:37:56,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1869528835, now seen corresponding path program 1 times [2021-11-25 18:37:56,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:37:56,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078035097] [2021-11-25 18:37:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:56,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:37:56,411 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:37:56,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924700589] [2021-11-25 18:37:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:37:56,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:37:56,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:37:56,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:37:56,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 18:37:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:37:57,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:37:57,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:37:57,286 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-25 18:37:57,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:37:57,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:37:57,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078035097] [2021-11-25 18:37:57,288 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:37:57,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924700589] [2021-11-25 18:37:57,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924700589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:37:57,288 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:37:57,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:37:57,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326835045] [2021-11-25 18:37:57,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:37:57,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:37:57,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:37:57,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:37:57,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:37:57,292 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-25 18:38:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:00,555 INFO L93 Difference]: Finished difference Result 752 states and 1170 transitions. [2021-11-25 18:38:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:38:00,556 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 118 [2021-11-25 18:38:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:00,563 INFO L225 Difference]: With dead ends: 752 [2021-11-25 18:38:00,563 INFO L226 Difference]: Without dead ends: 395 [2021-11-25 18:38:00,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:38:00,571 INFO L933 BasicCegarLoop]: 464 mSDtfsCounter, 51 mSDsluCounter, 1914 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:00,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 2214 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 18:38:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-11-25 18:38:00,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 387. [2021-11-25 18:38:00,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-11-25 18:38:00,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2021-11-25 18:38:00,660 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 118 [2021-11-25 18:38:00,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:00,664 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2021-11-25 18:38:00,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-25 18:38:00,664 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2021-11-25 18:38:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-25 18:38:00,678 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:00,678 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:38:00,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:38:00,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-25 18:38:00,903 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:00,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:00,903 INFO L85 PathProgramCache]: Analyzing trace with hash 2010446515, now seen corresponding path program 1 times [2021-11-25 18:38:00,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:00,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226937566] [2021-11-25 18:38:00,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:00,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:00,998 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:38:00,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193076794] [2021-11-25 18:38:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:00,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:00,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:38:00,999 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:38:01,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 18:38:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:38:01,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 2652 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 18:38:01,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:38:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-25 18:38:01,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:38:01,966 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226937566] [2021-11-25 18:38:01,966 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:38:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193076794] [2021-11-25 18:38:01,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193076794] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:01,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:01,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:38:01,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396884177] [2021-11-25 18:38:01,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:01,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:38:01,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:01,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:38:01,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:38:01,969 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-25 18:38:04,416 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:05,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:09,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:09,095 INFO L93 Difference]: Finished difference Result 754 states and 1162 transitions. [2021-11-25 18:38:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:38:09,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 126 [2021-11-25 18:38:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:09,102 INFO L225 Difference]: With dead ends: 754 [2021-11-25 18:38:09,102 INFO L226 Difference]: Without dead ends: 397 [2021-11-25 18:38:09,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:38:09,107 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 74 mSDsluCounter, 2784 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 2989 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:09,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 2989 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-25 18:38:09,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-25 18:38:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 387. [2021-11-25 18:38:09,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (186), 157 states have call predecessors, (186), 156 states have call successors, (186) [2021-11-25 18:38:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 582 transitions. [2021-11-25 18:38:09,170 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 582 transitions. Word has length 126 [2021-11-25 18:38:09,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:09,171 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 582 transitions. [2021-11-25 18:38:09,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-25 18:38:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 582 transitions. [2021-11-25 18:38:09,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-25 18:38:09,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:09,178 INFO L514 BasicCegarLoop]: trace histogram [9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:38:09,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:38:09,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:09,403 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:09,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:09,403 INFO L85 PathProgramCache]: Analyzing trace with hash -125786803, now seen corresponding path program 2 times [2021-11-25 18:38:09,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:09,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279747743] [2021-11-25 18:38:09,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:09,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:09,534 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:38:09,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152023920] [2021-11-25 18:38:09,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 18:38:09,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:09,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:38:09,539 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:38:09,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 18:38:10,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 18:38:10,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:38:10,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 1885 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-25 18:38:10,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:38:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-11-25 18:38:10,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:38:10,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:10,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279747743] [2021-11-25 18:38:10,404 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:38:10,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152023920] [2021-11-25 18:38:10,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152023920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:38:10,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:38:10,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:38:10,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276505978] [2021-11-25 18:38:10,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:38:10,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:38:10,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 18:38:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:38:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:38:10,407 INFO L87 Difference]: Start difference. First operand 387 states and 582 transitions. Second operand has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:38:14,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:38:15,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:38:15,163 INFO L93 Difference]: Finished difference Result 712 states and 1102 transitions. [2021-11-25 18:38:15,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:38:15,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 135 [2021-11-25 18:38:15,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:38:15,169 INFO L225 Difference]: With dead ends: 712 [2021-11-25 18:38:15,169 INFO L226 Difference]: Without dead ends: 387 [2021-11-25 18:38:15,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:38:15,181 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 0 mSDsluCounter, 1463 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-25 18:38:15,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1790 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-11-25 18:38:15,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-25 18:38:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-11-25 18:38:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 199 states have (on average 1.1959798994974875) internal successors, (238), 203 states have internal predecessors, (238), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (185), 157 states have call predecessors, (185), 156 states have call successors, (185) [2021-11-25 18:38:15,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 581 transitions. [2021-11-25 18:38:15,210 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 581 transitions. Word has length 135 [2021-11-25 18:38:15,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:38:15,211 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 581 transitions. [2021-11-25 18:38:15,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:38:15,211 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 581 transitions. [2021-11-25 18:38:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-25 18:38:15,213 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:38:15,214 INFO L514 BasicCegarLoop]: trace histogram [9, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:38:15,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:38:15,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:15,439 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:38:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:38:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1818901227, now seen corresponding path program 3 times [2021-11-25 18:38:15,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 18:38:15,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050848250] [2021-11-25 18:38:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:38:15,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 18:38:15,547 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 18:38:15,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [674529023] [2021-11-25 18:38:15,547 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 18:38:15,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:38:15,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:38:15,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:38:15,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 18:38:15,945 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 18:38:15,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:38:15,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-25 18:38:15,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:38:16,390 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-25 18:38:16,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:38:17,025 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-11-25 18:38:17,025 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 18:38:17,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050848250] [2021-11-25 18:38:17,025 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 18:38:17,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674529023] [2021-11-25 18:38:17,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674529023] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:38:17,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [74666407] [2021-11-25 18:38:17,062 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2021-11-25 18:38:17,062 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 18:38:17,068 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 18:38:17,074 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 18:38:17,074 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 18:38:20,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:38:20,456 INFO L244 Elim1Store]: Index analysis took 461 ms [2021-11-25 18:38:39,070 WARN L227 SmtUtils]: Spent 18.52s on a formula simplification. DAG size of input: 1767 DAG size of output: 1175 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 18:38:39,076 INFO L354 Elim1Store]: treesize reduction 1968, result has 47.2 percent of original size [2021-11-25 18:38:39,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19308 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 196 case distinctions, treesize of input 992 treesize of output 2358 [2021-11-25 18:38:42,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:38:43,057 INFO L244 Elim1Store]: Index analysis took 1262 ms [2021-11-25 18:39:16,126 WARN L227 SmtUtils]: Spent 32.99s on a formula simplification. DAG size of input: 2161 DAG size of output: 1179 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 18:39:16,131 INFO L354 Elim1Store]: treesize reduction 3528, result has 33.3 percent of original size [2021-11-25 18:39:16,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19505 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 392 case distinctions, treesize of input 1002 treesize of output 2377 [2021-11-25 18:39:18,007 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-25 18:39:18,140 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-25 18:39:18,385 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-25 18:39:19,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-25 18:39:19,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:39:19,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2021-11-25 18:39:19,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 43 [2021-11-25 18:39:19,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 203 [2021-11-25 18:39:19,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:19,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 251 treesize of output 203 [2021-11-25 18:39:21,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:21,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-25 18:39:21,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:21,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-25 18:39:21,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:21,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 18:39:21,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:21,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-25 18:39:21,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:21,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-25 18:39:21,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:21,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 18:39:22,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 18:39:22,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-25 18:39:22,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-25 18:39:22,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-25 18:39:22,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30 [2021-11-25 18:39:22,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,604 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24 [2021-11-25 18:39:22,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:39:22,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 645 treesize of output 635 [2021-11-25 18:39:22,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 650 treesize of output 629 [2021-11-25 18:39:22,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:22,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 640 treesize of output 630 [2021-11-25 18:39:23,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:39:23,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:39:23,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:39:23,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:39:23,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:39:23,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:39:23,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-25 18:39:23,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-25 18:39:23,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:39:23,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,007 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:39:24,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-25 18:39:24,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:39:24,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,102 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 18:39:24,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-25 18:39:24,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:39:24,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 18:39:24,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:39:24,341 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 27 treesize of output 23 [2021-11-25 18:39:24,345 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 23 treesize of output 19 [2021-11-25 18:39:24,366 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 27 treesize of output 23 [2021-11-25 18:39:24,370 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 23 treesize of output 19 [2021-11-25 18:39:24,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 641 treesize of output 613 [2021-11-25 18:39:24,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 613 treesize of output 589 [2021-11-25 18:39:24,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:24,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 596 treesize of output 568 [2021-11-25 18:39:25,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:25,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:25,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:25,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 641 treesize of output 613 [2021-11-25 18:39:25,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:26,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 613 treesize of output 589 [2021-11-25 18:39:26,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:26,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:26,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:26,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 596 treesize of output 568 [2021-11-25 18:39:30,260 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-11-25 18:39:30,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 227 treesize of output 237 [2021-11-25 18:39:30,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-11-25 18:39:30,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-25 18:39:30,695 INFO L354 Elim1Store]: treesize reduction 127, result has 17.5 percent of original size [2021-11-25 18:39:30,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 255 treesize of output 265 [2021-11-25 18:39:30,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2021-11-25 18:39:30,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 150 [2021-11-25 18:39:31,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 145 [2021-11-25 18:39:31,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 148 [2021-11-25 18:39:31,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 153 [2021-11-25 18:39:31,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 77 [2021-11-25 18:39:31,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-25 18:39:31,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:31,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:31,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:31,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 346 treesize of output 318 [2021-11-25 18:39:31,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-25 18:39:31,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-25 18:39:32,913 INFO L354 Elim1Store]: treesize reduction 74, result has 20.4 percent of original size [2021-11-25 18:39:32,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 227 treesize of output 237 [2021-11-25 18:39:33,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2021-11-25 18:39:33,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-25 18:39:34,890 INFO L354 Elim1Store]: treesize reduction 127, result has 17.5 percent of original size [2021-11-25 18:39:34,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 213 treesize of output 229 [2021-11-25 18:39:34,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 181 [2021-11-25 18:39:35,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 87 [2021-11-25 18:39:35,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2021-11-25 18:39:35,886 INFO L354 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2021-11-25 18:39:35,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 237 treesize of output 233 [2021-11-25 18:39:36,588 INFO L354 Elim1Store]: treesize reduction 21, result has 46.2 percent of original size [2021-11-25 18:39:36,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 42 treesize of output 50 [2021-11-25 18:39:37,281 INFO L354 Elim1Store]: treesize reduction 99, result has 21.4 percent of original size [2021-11-25 18:39:37,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 131 treesize of output 151 [2021-11-25 18:39:37,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2021-11-25 18:39:37,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 48 [2021-11-25 18:39:37,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 41 [2021-11-25 18:39:37,577 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:39:37,596 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 18:39:38,350 INFO L354 Elim1Store]: treesize reduction 109, result has 19.9 percent of original size [2021-11-25 18:39:38,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 463 treesize of output 457 [2021-11-25 18:39:38,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 18:39:38,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 246 treesize of output 210 [2021-11-25 18:39:39,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 715 treesize of output 629 [2021-11-25 18:39:39,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 69 [2021-11-25 18:39:39,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 74 [2021-11-25 18:39:39,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 86 [2021-11-25 18:39:39,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 81 [2021-11-25 18:39:39,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 61 [2021-11-25 18:39:39,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 751 treesize of output 741 [2021-11-25 18:39:39,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:39:39,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:39:39,871 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Should have been eliminated by DER at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:154) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:124) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:95) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:90) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:903) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:865) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:783) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:425) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:496) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:635) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:162) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:243) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:233) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-25 18:39:39,876 INFO L158 Benchmark]: Toolchain (without parser) took 120785.62ms. Allocated memory was 98.6MB in the beginning and 413.1MB in the end (delta: 314.6MB). Free memory was 68.7MB in the beginning and 85.2MB in the end (delta: -16.5MB). Peak memory consumption was 301.4MB. Max. memory is 16.1GB. [2021-11-25 18:39:39,876 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 98.6MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 18:39:39,876 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3004.73ms. Allocated memory was 98.6MB in the beginning and 174.1MB in the end (delta: 75.5MB). Free memory was 68.4MB in the beginning and 128.1MB in the end (delta: -59.7MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. [2021-11-25 18:39:39,877 INFO L158 Benchmark]: Boogie Procedure Inliner took 236.68ms. Allocated memory is still 174.1MB. Free memory was 128.1MB in the beginning and 116.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:39:39,877 INFO L158 Benchmark]: Boogie Preprocessor took 186.26ms. Allocated memory is still 174.1MB. Free memory was 116.6MB in the beginning and 107.2MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 18:39:39,877 INFO L158 Benchmark]: RCFGBuilder took 3504.53ms. Allocated memory is still 174.1MB. Free memory was 107.2MB in the beginning and 73.8MB in the end (delta: 33.4MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2021-11-25 18:39:39,878 INFO L158 Benchmark]: TraceAbstraction took 113843.65ms. Allocated memory was 174.1MB in the beginning and 413.1MB in the end (delta: 239.1MB). Free memory was 72.8MB in the beginning and 85.2MB in the end (delta: -12.4MB). Peak memory consumption was 231.5MB. Max. memory is 16.1GB. [2021-11-25 18:39:39,880 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 98.6MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3004.73ms. Allocated memory was 98.6MB in the beginning and 174.1MB in the end (delta: 75.5MB). Free memory was 68.4MB in the beginning and 128.1MB in the end (delta: -59.7MB). Peak memory consumption was 55.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 236.68ms. Allocated memory is still 174.1MB. Free memory was 128.1MB in the beginning and 116.6MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 186.26ms. Allocated memory is still 174.1MB. Free memory was 116.6MB in the beginning and 107.2MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 3504.53ms. Allocated memory is still 174.1MB. Free memory was 107.2MB in the beginning and 73.8MB in the end (delta: 33.4MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * TraceAbstraction took 113843.65ms. Allocated memory was 174.1MB in the beginning and 413.1MB in the end (delta: 239.1MB). Free memory was 72.8MB in the beginning and 85.2MB in the end (delta: -12.4MB). Peak memory consumption was 231.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Should have been eliminated by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Should have been eliminated by DER: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:108) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-11-25 18:39:39,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7 --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 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 18:39:42,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 18:39:42,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 18:39:42,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 18:39:42,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 18:39:42,810 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 18:39:42,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 18:39:42,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 18:39:42,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 18:39:42,836 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 18:39:42,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 18:39:42,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 18:39:42,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 18:39:42,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 18:39:42,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 18:39:42,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 18:39:42,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 18:39:42,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 18:39:42,850 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 18:39:42,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 18:39:42,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 18:39:42,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 18:39:42,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 18:39:42,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 18:39:42,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 18:39:42,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 18:39:42,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 18:39:42,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 18:39:42,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 18:39:42,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 18:39:42,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 18:39:42,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 18:39:42,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 18:39:42,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 18:39:42,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 18:39:42,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 18:39:42,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 18:39:42,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 18:39:42,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 18:39:42,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 18:39:42,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 18:39:42,881 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-25 18:39:42,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 18:39:42,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 18:39:42,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 18:39:42,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 18:39:42,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 18:39:42,913 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 18:39:42,913 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 18:39:42,913 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 18:39:42,914 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 18:39:42,914 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 18:39:42,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 18:39:42,915 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 18:39:42,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 18:39:42,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 18:39:42,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 18:39:42,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 18:39:42,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 18:39:42,917 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-25 18:39:42,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-25 18:39:42,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-25 18:39:42,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 18:39:42,919 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 18:39:42,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 18:39:42,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 18:39:42,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-25 18:39:42,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 18:39:42,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:39:42,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 18:39:42,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 18:39:42,922 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 18:39:42,922 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-25 18:39:42,922 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-25 18:39:42,923 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 18:39:42,923 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 18:39:42,923 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 18:39:42,923 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 71774aeec0d0f8840a1b18b633767b26c38c9eb9d26569d28cdf01c44c9881ac [2021-11-25 18:39:43,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 18:39:43,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 18:39:43,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 18:39:43,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 18:39:43,461 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 18:39:43,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-25 18:39:43,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data/8d65bf420/7fd5af5144b14d64929a4642e69c8f37/FLAGd0efbee6b [2021-11-25 18:39:44,835 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 18:39:44,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i [2021-11-25 18:39:44,884 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data/8d65bf420/7fd5af5144b14d64929a4642e69c8f37/FLAGd0efbee6b [2021-11-25 18:39:45,163 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/data/8d65bf420/7fd5af5144b14d64929a4642e69c8f37 [2021-11-25 18:39:45,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 18:39:45,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 18:39:45,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 18:39:45,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 18:39:45,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 18:39:45,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:39:45" (1/1) ... [2021-11-25 18:39:45,179 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424cf042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:45, skipping insertion in model container [2021-11-25 18:39:45,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:39:45" (1/1) ... [2021-11-25 18:39:45,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 18:39:45,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:39:45,676 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-25 18:39:45,684 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-25 18:39:46,775 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,777 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,778 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,779 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,804 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,805 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,806 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,808 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,809 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,810 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:46,811 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,269 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:39:47,274 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:39:47,275 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:39:47,277 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:39:47,278 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:39:47,279 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:39:47,280 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:39:47,281 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:39:47,284 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:39:47,285 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:39:47,466 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:39:47,506 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,515 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,644 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,645 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,655 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,656 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,657 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,658 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,661 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,670 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,671 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,671 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,685 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,686 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,710 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,711 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:39:47,782 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-25 18:39:47,856 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 18:39:47,861 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-25 18:39:47,866 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-25 18:39:47,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,955 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,956 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,957 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,980 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,981 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,983 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:47,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,069 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:39:48,071 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:39:48,073 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:39:48,074 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:39:48,076 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:39:48,076 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:39:48,079 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:39:48,079 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:39:48,081 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:39:48,081 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:39:48,127 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:39:48,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,161 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,204 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,205 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,206 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,207 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,208 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,208 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,209 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,209 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,210 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,211 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,212 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,212 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,213 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,216 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,217 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,225 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,226 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,227 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:39:48,255 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 18:39:48,286 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4496,4509] [2021-11-25 18:39:48,288 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_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/sv-benchmarks/c/aws-c-common/aws_priority_queue_pop_harness.i[4556,4569] [2021-11-25 18:39:48,344 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,345 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,345 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,346 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,347 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,355 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,356 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,357 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,357 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,359 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,360 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,360 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,361 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,433 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-25 18:39:48,434 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-25 18:39:48,435 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-25 18:39:48,435 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-25 18:39:48,436 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-25 18:39:48,437 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-25 18:39:48,438 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-25 18:39:48,438 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-25 18:39:48,439 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-25 18:39:48,440 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-25 18:39:48,476 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-25 18:39:48,501 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,549 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,550 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,551 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,552 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,553 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,553 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,554 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,555 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,557 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,558 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,562 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,565 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,565 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,572 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,574 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,575 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-25 18:39:48,586 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 18:39:49,043 INFO L208 MainTranslator]: Completed translation [2021-11-25 18:39:49,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49 WrapperNode [2021-11-25 18:39:49,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 18:39:49,052 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 18:39:49,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 18:39:49,053 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 18:39:49,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,327 INFO L137 Inliner]: procedures = 717, calls = 1918, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1015 [2021-11-25 18:39:49,330 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 18:39:49,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 18:39:49,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 18:39:49,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 18:39:49,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,446 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 18:39:49,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 18:39:49,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 18:39:49,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 18:39:49,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (1/1) ... [2021-11-25 18:39:49,540 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 18:39:49,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:39:49,576 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 18:39:49,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 18:39:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-25 18:39:49,685 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-25 18:39:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-25 18:39:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-25 18:39:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 18:39:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-25 18:39:49,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-25 18:39:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-25 18:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-25 18:39:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-25 18:39:49,687 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-25 18:39:49,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 18:39:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-25 18:39:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-25 18:39:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-25 18:39:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-25 18:39:49,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-25 18:39:49,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-25 18:39:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 18:39:49,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 18:39:49,689 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-25 18:39:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-25 18:39:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-25 18:39:49,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-25 18:39:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 18:39:49,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 18:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-25 18:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-25 18:39:49,691 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-25 18:39:49,691 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-25 18:39:49,692 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-25 18:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 18:39:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 18:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-25 18:39:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-25 18:39:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-25 18:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-25 18:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-25 18:39:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-25 18:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-25 18:39:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-25 18:39:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-25 18:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-25 18:39:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-25 18:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-25 18:39:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-25 18:39:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-25 18:39:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-25 18:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 18:39:49,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 18:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-25 18:39:49,697 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-25 18:39:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-25 18:39:49,698 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-25 18:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 18:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-25 18:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-25 18:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-25 18:39:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-25 18:39:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-25 18:39:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-25 18:39:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-25 18:39:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-25 18:39:49,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-25 18:39:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-25 18:39:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-25 18:39:49,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-25 18:39:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-25 18:39:49,700 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-25 18:39:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-25 18:39:49,701 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-25 18:39:50,240 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 18:39:50,242 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 18:39:55,798 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 18:39:55,811 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 18:39:55,812 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-25 18:39:55,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:39:55 BoogieIcfgContainer [2021-11-25 18:39:55,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 18:39:55,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 18:39:55,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 18:39:55,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 18:39:55,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:39:45" (1/3) ... [2021-11-25 18:39:55,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268227af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:39:55, skipping insertion in model container [2021-11-25 18:39:55,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:39:49" (2/3) ... [2021-11-25 18:39:55,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@268227af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:39:55, skipping insertion in model container [2021-11-25 18:39:55,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:39:55" (3/3) ... [2021-11-25 18:39:55,825 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_pop_harness.i [2021-11-25 18:39:55,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 18:39:55,831 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-25 18:39:55,936 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 18:39:55,950 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 [2021-11-25 18:39:55,955 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-25 18:39:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 444 states, 259 states have (on average 1.2664092664092663) internal successors, (328), 262 states have internal predecessors, (328), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) [2021-11-25 18:39:56,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 18:39:56,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:56,043 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-25 18:39:56,044 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:39:56,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:56,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1834595556, now seen corresponding path program 1 times [2021-11-25 18:39:56,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:39:56,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888170396] [2021-11-25 18:39:56,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:56,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:39:56,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:39:56,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:39:56,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 18:39:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:57,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 18:39:57,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:39:57,806 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-25 18:39:57,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:39:57,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:39:57,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888170396] [2021-11-25 18:39:57,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888170396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:39:57,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:39:57,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 18:39:57,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668502856] [2021-11-25 18:39:57,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:39:57,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 18:39:57,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:39:57,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 18:39:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:39:57,869 INFO L87 Difference]: Start difference. First operand has 444 states, 259 states have (on average 1.2664092664092663) internal successors, (328), 262 states have internal predecessors, (328), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (156), 156 states have call predecessors, (156), 156 states have call successors, (156) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:39:58,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:39:58,031 INFO L93 Difference]: Finished difference Result 875 states and 1391 transitions. [2021-11-25 18:39:58,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 18:39:58,034 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 133 [2021-11-25 18:39:58,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:39:58,052 INFO L225 Difference]: With dead ends: 875 [2021-11-25 18:39:58,052 INFO L226 Difference]: Without dead ends: 437 [2021-11-25 18:39:58,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 18:39:58,068 INFO L933 BasicCegarLoop]: 629 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, 629 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 [2021-11-25 18:39:58,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 18:39:58,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-25 18:39:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-11-25 18:39:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 253 states have (on average 1.2411067193675889) internal successors, (314), 256 states have internal predecessors, (314), 156 states have call successors, (156), 27 states have call predecessors, (156), 26 states have return successors, (154), 154 states have call predecessors, (154), 154 states have call successors, (154) [2021-11-25 18:39:58,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 624 transitions. [2021-11-25 18:39:58,171 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 624 transitions. Word has length 133 [2021-11-25 18:39:58,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:39:58,173 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 624 transitions. [2021-11-25 18:39:58,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-25 18:39:58,174 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 624 transitions. [2021-11-25 18:39:58,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-25 18:39:58,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:39:58,178 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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] [2021-11-25 18:39:58,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 18:39:58,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:39:58,394 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:39:58,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:39:58,395 INFO L85 PathProgramCache]: Analyzing trace with hash 133133086, now seen corresponding path program 1 times [2021-11-25 18:39:58,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:39:58,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385352875] [2021-11-25 18:39:58,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:39:58,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:39:58,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:39:58,399 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:39:58,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 18:39:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:39:59,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:39:59,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:40:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-25 18:40:00,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:40:00,303 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:40:00,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385352875] [2021-11-25 18:40:00,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385352875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:00,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:00,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:40:00,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773948377] [2021-11-25 18:40:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:00,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:40:00,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:40:00,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:40:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:40:00,307 INFO L87 Difference]: Start difference. First operand 437 states and 624 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 18:40:02,688 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:03,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:03,283 INFO L93 Difference]: Finished difference Result 840 states and 1217 transitions. [2021-11-25 18:40:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:40:03,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 133 [2021-11-25 18:40:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:03,293 INFO L225 Difference]: With dead ends: 840 [2021-11-25 18:40:03,294 INFO L226 Difference]: Without dead ends: 439 [2021-11-25 18:40:03,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:40:03,299 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 35 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2312 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:03,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 2312 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-25 18:40:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-25 18:40:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-25 18:40:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 254 states have (on average 1.2401574803149606) internal successors, (315), 258 states have internal predecessors, (315), 156 states have call successors, (156), 27 states have call predecessors, (156), 27 states have return successors, (168), 154 states have call predecessors, (168), 154 states have call successors, (168) [2021-11-25 18:40:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 639 transitions. [2021-11-25 18:40:03,356 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 639 transitions. Word has length 133 [2021-11-25 18:40:03,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:03,357 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 639 transitions. [2021-11-25 18:40:03,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-11-25 18:40:03,358 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 639 transitions. [2021-11-25 18:40:03,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-25 18:40:03,361 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:03,361 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:03,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 18:40:03,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:40:03,583 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:03,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:03,583 INFO L85 PathProgramCache]: Analyzing trace with hash 74249020, now seen corresponding path program 1 times [2021-11-25 18:40:03,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:40:03,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592357932] [2021-11-25 18:40:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:03,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:40:03,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:40:03,588 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:40:03,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 18:40:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:04,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:40:04,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:40:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-25 18:40:05,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:40:05,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:40:05,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592357932] [2021-11-25 18:40:05,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592357932] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:05,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:05,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:40:05,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304008347] [2021-11-25 18:40:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:05,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:40:05,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:40:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:40:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:40:05,831 INFO L87 Difference]: Start difference. First operand 439 states and 639 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-25 18:40:08,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:09,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:09,774 INFO L93 Difference]: Finished difference Result 863 states and 1290 transitions. [2021-11-25 18:40:09,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:40:09,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 141 [2021-11-25 18:40:09,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:09,789 INFO L225 Difference]: With dead ends: 863 [2021-11-25 18:40:09,789 INFO L226 Difference]: Without dead ends: 460 [2021-11-25 18:40:09,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:40:09,797 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 86 mSDsluCounter, 2764 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:09,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 3342 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2021-11-25 18:40:09,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-25 18:40:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 458. [2021-11-25 18:40:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 274 states have internal predecessors, (337), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (187), 157 states have call predecessors, (187), 156 states have call successors, (187) [2021-11-25 18:40:09,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 682 transitions. [2021-11-25 18:40:09,891 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 682 transitions. Word has length 141 [2021-11-25 18:40:09,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:09,893 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 682 transitions. [2021-11-25 18:40:09,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-11-25 18:40:09,893 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 682 transitions. [2021-11-25 18:40:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-25 18:40:09,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:09,898 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:09,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 18:40:10,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:40:10,127 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:10,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:10,127 INFO L85 PathProgramCache]: Analyzing trace with hash -782989412, now seen corresponding path program 1 times [2021-11-25 18:40:10,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:40:10,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060145123] [2021-11-25 18:40:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:10,130 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:40:10,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:40:10,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:40:10,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-25 18:40:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:11,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:40:11,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:40:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-25 18:40:12,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:40:12,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:40:12,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060145123] [2021-11-25 18:40:12,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060145123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:12,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:12,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:40:12,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743109960] [2021-11-25 18:40:12,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:12,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:40:12,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:40:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:40:12,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:40:12,276 INFO L87 Difference]: Start difference. First operand 458 states and 682 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-25 18:40:14,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:15,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:15,890 INFO L93 Difference]: Finished difference Result 888 states and 1365 transitions. [2021-11-25 18:40:15,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:40:15,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 156 [2021-11-25 18:40:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:15,898 INFO L225 Difference]: With dead ends: 888 [2021-11-25 18:40:15,898 INFO L226 Difference]: Without dead ends: 466 [2021-11-25 18:40:15,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:40:15,904 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 58 mSDsluCounter, 2260 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:15,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2853 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-25 18:40:15,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-11-25 18:40:15,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2021-11-25 18:40:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 270 states have (on average 1.2481481481481482) internal successors, (337), 274 states have internal predecessors, (337), 158 states have call successors, (158), 27 states have call predecessors, (158), 28 states have return successors, (187), 157 states have call predecessors, (187), 156 states have call successors, (187) [2021-11-25 18:40:15,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 682 transitions. [2021-11-25 18:40:15,944 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 682 transitions. Word has length 156 [2021-11-25 18:40:15,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:15,945 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 682 transitions. [2021-11-25 18:40:15,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-11-25 18:40:15,945 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 682 transitions. [2021-11-25 18:40:15,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-25 18:40:15,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:15,949 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:15,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-25 18:40:16,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:40:16,173 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:16,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:16,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1549701389, now seen corresponding path program 1 times [2021-11-25 18:40:16,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:40:16,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146089068] [2021-11-25 18:40:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:16,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:40:16,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:40:16,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:40:16,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-25 18:40:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:17,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 1817 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:40:17,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:40:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-11-25 18:40:18,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:40:18,824 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:40:18,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146089068] [2021-11-25 18:40:18,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146089068] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:18,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:18,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:40:18,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133633692] [2021-11-25 18:40:18,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:18,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:40:18,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:40:18,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:40:18,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:40:18,826 INFO L87 Difference]: Start difference. First operand 458 states and 682 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-25 18:40:22,465 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:24,266 INFO L93 Difference]: Finished difference Result 910 states and 1384 transitions. [2021-11-25 18:40:24,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 18:40:24,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 172 [2021-11-25 18:40:24,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:24,275 INFO L225 Difference]: With dead ends: 910 [2021-11-25 18:40:24,275 INFO L226 Difference]: Without dead ends: 488 [2021-11-25 18:40:24,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:40:24,281 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 130 mSDsluCounter, 3305 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 3883 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:24,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 3883 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 569 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2021-11-25 18:40:24,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-25 18:40:24,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 470. [2021-11-25 18:40:24,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 280 states have (on average 1.2535714285714286) internal successors, (351), 284 states have internal predecessors, (351), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-25 18:40:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 698 transitions. [2021-11-25 18:40:24,328 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 698 transitions. Word has length 172 [2021-11-25 18:40:24,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:24,330 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 698 transitions. [2021-11-25 18:40:24,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 5 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2021-11-25 18:40:24,330 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 698 transitions. [2021-11-25 18:40:24,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-25 18:40:24,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:24,337 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:24,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-25 18:40:24,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:40:24,563 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:24,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:24,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1969354101, now seen corresponding path program 2 times [2021-11-25 18:40:24,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:40:24,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804011424] [2021-11-25 18:40:24,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:40:24,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:40:24,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:40:24,567 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:40:24,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 18:40:26,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:40:26,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:40:27,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 1929 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 18:40:27,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:40:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 18:40:28,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:40:28,699 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:40:28,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804011424] [2021-11-25 18:40:28,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804011424] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:28,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:28,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:40:28,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561109907] [2021-11-25 18:40:28,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:28,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:40:28,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:40:28,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:40:28,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:40:28,702 INFO L87 Difference]: Start difference. First operand 470 states and 698 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2021-11-25 18:40:33,749 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:35,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:37,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:41,414 INFO L93 Difference]: Finished difference Result 940 states and 1458 transitions. [2021-11-25 18:40:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:40:41,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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 187 [2021-11-25 18:40:41,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:41,425 INFO L225 Difference]: With dead ends: 940 [2021-11-25 18:40:41,425 INFO L226 Difference]: Without dead ends: 506 [2021-11-25 18:40:41,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:40:41,432 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 21 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2950 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:41,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2950 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 254 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2021-11-25 18:40:41,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-11-25 18:40:41,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 478. [2021-11-25 18:40:41,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 288 states have (on average 1.2534722222222223) internal successors, (361), 292 states have internal predecessors, (361), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-25 18:40:41,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 708 transitions. [2021-11-25 18:40:41,470 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 708 transitions. Word has length 187 [2021-11-25 18:40:41,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:41,471 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 708 transitions. [2021-11-25 18:40:41,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 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) [2021-11-25 18:40:41,471 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 708 transitions. [2021-11-25 18:40:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-25 18:40:41,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:41,475 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:41,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 18:40:41,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:40:41,691 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:41,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash -402596151, now seen corresponding path program 1 times [2021-11-25 18:40:41,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:40:41,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42952248] [2021-11-25 18:40:41,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:41,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:40:41,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:40:41,694 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:40:41,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-25 18:40:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:40:43,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:40:43,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:40:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 18:40:45,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:40:45,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:40:45,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42952248] [2021-11-25 18:40:45,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42952248] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:40:45,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:40:45,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:40:45,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751339216] [2021-11-25 18:40:45,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:40:45,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:40:45,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:40:45,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:40:45,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:40:45,492 INFO L87 Difference]: Start difference. First operand 478 states and 708 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2021-11-25 18:40:51,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:53,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:55,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:40:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:40:58,736 INFO L93 Difference]: Finished difference Result 950 states and 1468 transitions. [2021-11-25 18:40:58,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:40:58,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 187 [2021-11-25 18:40:58,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:40:58,747 INFO L225 Difference]: With dead ends: 950 [2021-11-25 18:40:58,748 INFO L226 Difference]: Without dead ends: 508 [2021-11-25 18:40:58,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:40:58,754 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 17 mSDsluCounter, 2945 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3579 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-25 18:40:58,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 3579 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 271 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2021-11-25 18:40:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-25 18:40:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 482. [2021-11-25 18:40:58,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 292 states have (on average 1.25) internal successors, (365), 296 states have internal predecessors, (365), 159 states have call successors, (159), 28 states have call predecessors, (159), 29 states have return successors, (188), 158 states have call predecessors, (188), 157 states have call successors, (188) [2021-11-25 18:40:58,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 712 transitions. [2021-11-25 18:40:58,792 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 712 transitions. Word has length 187 [2021-11-25 18:40:58,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:40:58,793 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 712 transitions. [2021-11-25 18:40:58,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2021-11-25 18:40:58,793 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 712 transitions. [2021-11-25 18:40:58,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-25 18:40:58,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:40:58,797 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:40:58,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-25 18:40:59,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:40:59,011 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:40:59,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:40:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1545098617, now seen corresponding path program 1 times [2021-11-25 18:40:59,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:40:59,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71519701] [2021-11-25 18:40:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:40:59,015 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:40:59,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:40:59,018 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:40:59,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-25 18:41:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:00,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-25 18:41:00,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:41:17,690 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 31 treesize of output 19 [2021-11-25 18:41:17,700 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 [2021-11-25 18:41:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-25 18:41:20,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:41:20,133 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:41:20,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71519701] [2021-11-25 18:41:20,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71519701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:20,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:20,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 18:41:20,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710496043] [2021-11-25 18:41:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:20,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:41:20,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:41:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:41:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=85, Unknown=3, NotChecked=0, Total=110 [2021-11-25 18:41:20,136 INFO L87 Difference]: Start difference. First operand 482 states and 712 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-25 18:41:31,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:36,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:36,654 INFO L93 Difference]: Finished difference Result 969 states and 1490 transitions. [2021-11-25 18:41:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 18:41:36,656 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) Word has length 187 [2021-11-25 18:41:36,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:36,663 INFO L225 Difference]: With dead ends: 969 [2021-11-25 18:41:36,663 INFO L226 Difference]: Without dead ends: 550 [2021-11-25 18:41:36,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 175 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=70, Invalid=230, Unknown=6, NotChecked=0, Total=306 [2021-11-25 18:41:36,667 INFO L933 BasicCegarLoop]: 609 mSDtfsCounter, 87 mSDsluCounter, 4489 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 5098 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 155 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:36,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 5098 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 739 Invalid, 1 Unknown, 155 Unchecked, 8.8s Time] [2021-11-25 18:41:36,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-25 18:41:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 519. [2021-11-25 18:41:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 319 states have (on average 1.2413793103448276) internal successors, (396), 323 states have internal predecessors, (396), 164 states have call successors, (164), 32 states have call predecessors, (164), 34 states have return successors, (208), 164 states have call predecessors, (208), 162 states have call successors, (208) [2021-11-25 18:41:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 768 transitions. [2021-11-25 18:41:36,706 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 768 transitions. Word has length 187 [2021-11-25 18:41:36,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:36,707 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 768 transitions. [2021-11-25 18:41:36,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 6 states have call successors, (25), 3 states have call predecessors, (25), 4 states have return successors, (23), 6 states have call predecessors, (23), 6 states have call successors, (23) [2021-11-25 18:41:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 768 transitions. [2021-11-25 18:41:36,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-25 18:41:36,710 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:36,711 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:36,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-25 18:41:36,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:41:36,935 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:41:36,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash 446482249, now seen corresponding path program 1 times [2021-11-25 18:41:36,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:41:36,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435173475] [2021-11-25 18:41:36,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:36,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:41:36,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:41:36,938 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:41:36,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 18:41:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:38,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:41:38,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:41:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-11-25 18:41:39,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:41:39,412 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:41:39,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435173475] [2021-11-25 18:41:39,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435173475] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:39,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:39,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:41:39,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271033082] [2021-11-25 18:41:39,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:39,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:41:39,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:41:39,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:41:39,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:41:39,415 INFO L87 Difference]: Start difference. First operand 519 states and 768 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-25 18:41:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:39,658 INFO L93 Difference]: Finished difference Result 997 states and 1547 transitions. [2021-11-25 18:41:39,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:39,659 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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 187 [2021-11-25 18:41:39,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:39,666 INFO L225 Difference]: With dead ends: 997 [2021-11-25 18:41:39,666 INFO L226 Difference]: Without dead ends: 539 [2021-11-25 18:41:39,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:41:39,672 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 8 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:39,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2566 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:41:39,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2021-11-25 18:41:39,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 527. [2021-11-25 18:41:39,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 327 states have (on average 1.238532110091743) internal successors, (405), 331 states have internal predecessors, (405), 164 states have call successors, (164), 32 states have call predecessors, (164), 34 states have return successors, (208), 164 states have call predecessors, (208), 162 states have call successors, (208) [2021-11-25 18:41:39,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 777 transitions. [2021-11-25 18:41:39,733 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 777 transitions. Word has length 187 [2021-11-25 18:41:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:39,734 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 777 transitions. [2021-11-25 18:41:39,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2021-11-25 18:41:39,734 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 777 transitions. [2021-11-25 18:41:39,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-25 18:41:39,737 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:39,738 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:39,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 18:41:39,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:41:39,938 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:41:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash 519703029, now seen corresponding path program 1 times [2021-11-25 18:41:39,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:41:39,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803871254] [2021-11-25 18:41:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:39,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:41:39,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:41:39,944 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:41:39,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-25 18:41:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:41,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:41:41,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:41:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-11-25 18:41:42,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:41:42,655 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:41:42,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803871254] [2021-11-25 18:41:42,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803871254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:42,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:42,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:41:42,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840524153] [2021-11-25 18:41:42,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:42,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:41:42,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:41:42,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:41:42,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:41:42,657 INFO L87 Difference]: Start difference. First operand 527 states and 777 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 18:41:44,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:44,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:44,940 INFO L93 Difference]: Finished difference Result 984 states and 1472 transitions. [2021-11-25 18:41:44,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 18:41:44,941 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 188 [2021-11-25 18:41:44,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:44,948 INFO L225 Difference]: With dead ends: 984 [2021-11-25 18:41:44,948 INFO L226 Difference]: Without dead ends: 547 [2021-11-25 18:41:44,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:41:44,952 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 7 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3737 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:44,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3737 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:41:44,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-25 18:41:44,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 545. [2021-11-25 18:41:44,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 341 states have (on average 1.2375366568914956) internal successors, (422), 345 states have internal predecessors, (422), 166 states have call successors, (166), 32 states have call predecessors, (166), 36 states have return successors, (216), 168 states have call predecessors, (216), 164 states have call successors, (216) [2021-11-25 18:41:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 804 transitions. [2021-11-25 18:41:44,986 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 804 transitions. Word has length 188 [2021-11-25 18:41:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:44,987 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 804 transitions. [2021-11-25 18:41:44,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-25 18:41:44,987 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 804 transitions. [2021-11-25 18:41:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-25 18:41:44,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:44,991 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:45,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-25 18:41:45,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:41:45,211 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:41:45,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:45,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1395722035, now seen corresponding path program 1 times [2021-11-25 18:41:45,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:41:45,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1873208624] [2021-11-25 18:41:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:45,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:41:45,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:41:45,213 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:41:45,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-25 18:41:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1923 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 18:41:47,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:41:48,086 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-11-25 18:41:48,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:41:48,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:41:48,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1873208624] [2021-11-25 18:41:48,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1873208624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:48,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:48,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 18:41:48,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860747073] [2021-11-25 18:41:48,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:48,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 18:41:48,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:41:48,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 18:41:48,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-25 18:41:48,089 INFO L87 Difference]: Start difference. First operand 545 states and 804 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:41:50,562 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:52,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:52,285 INFO L93 Difference]: Finished difference Result 982 states and 1468 transitions. [2021-11-25 18:41:52,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 18:41:52,287 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 188 [2021-11-25 18:41:52,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:52,294 INFO L225 Difference]: With dead ends: 982 [2021-11-25 18:41:52,295 INFO L226 Difference]: Without dead ends: 530 [2021-11-25 18:41:52,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:41:52,299 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 8 mSDsluCounter, 4021 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:52,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 4608 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 398 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:41:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-25 18:41:52,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2021-11-25 18:41:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 329 states have (on average 1.2310030395136777) internal successors, (405), 334 states have internal predecessors, (405), 164 states have call successors, (164), 32 states have call predecessors, (164), 35 states have return successors, (210), 164 states have call predecessors, (210), 162 states have call successors, (210) [2021-11-25 18:41:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 779 transitions. [2021-11-25 18:41:52,336 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 779 transitions. Word has length 188 [2021-11-25 18:41:52,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:52,337 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 779 transitions. [2021-11-25 18:41:52,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-25 18:41:52,337 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 779 transitions. [2021-11-25 18:41:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-25 18:41:52,341 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:52,341 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:52,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-25 18:41:52,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:41:52,555 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:41:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash -807170079, now seen corresponding path program 1 times [2021-11-25 18:41:52,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:41:52,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693051487] [2021-11-25 18:41:52,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:52,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:41:52,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:41:52,559 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:41:52,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 18:41:54,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:41:54,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1949 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:41:54,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:41:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-25 18:41:55,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:41:55,547 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:41:55,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693051487] [2021-11-25 18:41:55,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693051487] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:41:55,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:41:55,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 18:41:55,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015911727] [2021-11-25 18:41:55,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:41:55,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 18:41:55,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:41:55,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 18:41:55,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 18:41:55,550 INFO L87 Difference]: Start difference. First operand 530 states and 779 transitions. Second operand has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-25 18:41:57,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:41:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:41:58,874 INFO L93 Difference]: Finished difference Result 966 states and 1451 transitions. [2021-11-25 18:41:58,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:41:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 199 [2021-11-25 18:41:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:41:58,883 INFO L225 Difference]: With dead ends: 966 [2021-11-25 18:41:58,883 INFO L226 Difference]: Without dead ends: 532 [2021-11-25 18:41:58,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:41:58,888 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 66 mSDsluCounter, 2246 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:41:58,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 2838 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 156 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-11-25 18:41:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-11-25 18:41:58,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2021-11-25 18:41:58,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 330 states have (on average 1.2303030303030302) internal successors, (406), 336 states have internal predecessors, (406), 164 states have call successors, (164), 32 states have call predecessors, (164), 36 states have return successors, (221), 164 states have call predecessors, (221), 162 states have call successors, (221) [2021-11-25 18:41:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 791 transitions. [2021-11-25 18:41:58,928 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 791 transitions. Word has length 199 [2021-11-25 18:41:58,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:41:58,929 INFO L470 AbstractCegarLoop]: Abstraction has 532 states and 791 transitions. [2021-11-25 18:41:58,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.6) internal successors, (88), 6 states have internal predecessors, (88), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-25 18:41:58,930 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 791 transitions. [2021-11-25 18:41:58,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-25 18:41:58,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:41:58,933 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:41:58,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 18:41:59,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:41:59,146 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:41:59,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:41:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1706346939, now seen corresponding path program 1 times [2021-11-25 18:41:59,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:41:59,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173742696] [2021-11-25 18:41:59,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:41:59,149 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:41:59,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:41:59,150 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:41:59,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-25 18:42:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:01,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 2091 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:42:01,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:42:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-11-25 18:42:02,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:42:02,687 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:42:02,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173742696] [2021-11-25 18:42:02,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173742696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:02,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:02,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 18:42:02,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984183508] [2021-11-25 18:42:02,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:02,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 18:42:02,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:42:02,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 18:42:02,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:42:02,690 INFO L87 Difference]: Start difference. First operand 532 states and 791 transitions. Second operand has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-25 18:42:05,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:06,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:06,911 INFO L93 Difference]: Finished difference Result 971 states and 1476 transitions. [2021-11-25 18:42:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:42:06,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) Word has length 222 [2021-11-25 18:42:06,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:06,920 INFO L225 Difference]: With dead ends: 971 [2021-11-25 18:42:06,920 INFO L226 Difference]: Without dead ends: 535 [2021-11-25 18:42:06,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:42:06,924 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 89 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:06,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 3366 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 295 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2021-11-25 18:42:06,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-11-25 18:42:06,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 533. [2021-11-25 18:42:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 331 states have (on average 1.229607250755287) internal successors, (407), 337 states have internal predecessors, (407), 164 states have call successors, (164), 32 states have call predecessors, (164), 36 states have return successors, (221), 164 states have call predecessors, (221), 162 states have call successors, (221) [2021-11-25 18:42:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 792 transitions. [2021-11-25 18:42:06,963 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 792 transitions. Word has length 222 [2021-11-25 18:42:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:06,963 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 792 transitions. [2021-11-25 18:42:06,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.166666666666666) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 4 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-25 18:42:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 792 transitions. [2021-11-25 18:42:06,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-25 18:42:06,967 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:06,967 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:42:07,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-25 18:42:07,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:42:07,181 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:42:07,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:07,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2073342888, now seen corresponding path program 1 times [2021-11-25 18:42:07,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:42:07,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392283266] [2021-11-25 18:42:07,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:42:07,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:42:07,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:42:07,186 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:42:07,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-25 18:42:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:42:10,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:42:10,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:42:11,272 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2021-11-25 18:42:11,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:42:11,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:42:11,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392283266] [2021-11-25 18:42:11,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392283266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:42:11,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:42:11,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 18:42:11,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868716642] [2021-11-25 18:42:11,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:42:11,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 18:42:11,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:42:11,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 18:42:11,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 18:42:11,275 INFO L87 Difference]: Start difference. First operand 533 states and 792 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-25 18:42:14,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:15,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:15,572 INFO L93 Difference]: Finished difference Result 976 states and 1472 transitions. [2021-11-25 18:42:15,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 18:42:15,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 253 [2021-11-25 18:42:15,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:15,579 INFO L225 Difference]: With dead ends: 976 [2021-11-25 18:42:15,579 INFO L226 Difference]: Without dead ends: 545 [2021-11-25 18:42:15,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:42:15,582 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 63 mSDsluCounter, 3395 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3981 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:15,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 3981 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 294 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-25 18:42:15,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-25 18:42:15,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 545. [2021-11-25 18:42:15,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 337 states have (on average 1.228486646884273) internal successors, (414), 343 states have internal predecessors, (414), 169 states have call successors, (169), 33 states have call predecessors, (169), 37 states have return successors, (226), 169 states have call predecessors, (226), 167 states have call successors, (226) [2021-11-25 18:42:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 809 transitions. [2021-11-25 18:42:15,622 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 809 transitions. Word has length 253 [2021-11-25 18:42:15,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:15,623 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 809 transitions. [2021-11-25 18:42:15,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-11-25 18:42:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 809 transitions. [2021-11-25 18:42:15,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-25 18:42:15,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:15,627 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:42:15,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-25 18:42:15,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:42:15,851 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:42:15,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:42:15,851 INFO L85 PathProgramCache]: Analyzing trace with hash -645428522, now seen corresponding path program 2 times [2021-11-25 18:42:15,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:42:15,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [823609306] [2021-11-25 18:42:15,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:42:15,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:42:15,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:42:15,856 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:42:15,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 18:42:20,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:42:20,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:42:20,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-25 18:42:20,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:42:21,975 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 208 proven. 6 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-11-25 18:42:21,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:42:24,288 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-25 18:42:24,288 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:42:24,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [823609306] [2021-11-25 18:42:24,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [823609306] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:42:24,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1352993466] [2021-11-25 18:42:24,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:42:24,289 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 18:42:24,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 18:42:24,290 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 18:42:24,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-25 18:42:44,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:42:44,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:42:44,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:42:44,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:42:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 213 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-25 18:42:45,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:42:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-25 18:42:47,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1352993466] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:42:47,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627491616] [2021-11-25 18:42:47,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 18:42:47,152 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 18:42:47,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 18:42:47,164 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 18:42:47,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-25 18:42:49,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 18:42:49,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 18:42:49,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 2246 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 18:42:49,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:42:50,754 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 213 proven. 3 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-11-25 18:42:50,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 18:42:52,168 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2021-11-25 18:42:52,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627491616] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 18:42:52,168 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 18:42:52,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8, 8, 8, 8] total 11 [2021-11-25 18:42:52,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330172828] [2021-11-25 18:42:52,169 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 18:42:52,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 18:42:52,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:42:52,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 18:42:52,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 18:42:52,171 INFO L87 Difference]: Start difference. First operand 545 states and 809 transitions. Second operand has 11 states, 10 states have (on average 12.3) internal successors, (123), 11 states have internal predecessors, (123), 8 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) [2021-11-25 18:42:56,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:42:59,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:42:59,589 INFO L93 Difference]: Finished difference Result 996 states and 1508 transitions. [2021-11-25 18:42:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:42:59,590 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 11 states have internal predecessors, (123), 8 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) Word has length 253 [2021-11-25 18:42:59,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:42:59,600 INFO L225 Difference]: With dead ends: 996 [2021-11-25 18:42:59,600 INFO L226 Difference]: Without dead ends: 547 [2021-11-25 18:42:59,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1521 GetRequests, 1507 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-25 18:42:59,607 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 159 mSDsluCounter, 4337 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 43 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 4908 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-25 18:42:59,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 4908 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 747 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2021-11-25 18:42:59,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-25 18:42:59,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 542. [2021-11-25 18:42:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 335 states have (on average 1.2298507462686568) internal successors, (412), 340 states have internal predecessors, (412), 169 states have call successors, (169), 33 states have call predecessors, (169), 36 states have return successors, (212), 169 states have call predecessors, (212), 167 states have call successors, (212) [2021-11-25 18:42:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 793 transitions. [2021-11-25 18:42:59,650 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 793 transitions. Word has length 253 [2021-11-25 18:42:59,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:42:59,651 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 793 transitions. [2021-11-25 18:42:59,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 12.3) internal successors, (123), 11 states have internal predecessors, (123), 8 states have call successors, (39), 2 states have call predecessors, (39), 4 states have return successors, (38), 5 states have call predecessors, (38), 8 states have call successors, (38) [2021-11-25 18:42:59,651 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 793 transitions. [2021-11-25 18:42:59,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-25 18:42:59,655 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:42:59,655 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:42:59,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-25 18:42:59,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-25 18:43:00,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-25 18:43:00,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 18:43:00,271 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:43:00,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:00,272 INFO L85 PathProgramCache]: Analyzing trace with hash -669863688, now seen corresponding path program 1 times [2021-11-25 18:43:00,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:43:00,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717802523] [2021-11-25 18:43:00,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:00,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:43:00,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:43:00,276 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:43:00,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-25 18:43:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:43:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-25 18:43:08,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:43:10,930 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 9 treesize of output 3 [2021-11-25 18:43:10,947 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 9 treesize of output 3 [2021-11-25 18:43:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-11-25 18:43:12,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:43:12,311 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:43:12,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717802523] [2021-11-25 18:43:12,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717802523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:43:12,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:43:12,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-25 18:43:12,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130369866] [2021-11-25 18:43:12,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:43:12,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 18:43:12,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:43:12,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 18:43:12,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-25 18:43:12,314 INFO L87 Difference]: Start difference. First operand 542 states and 793 transitions. Second operand has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 18:43:19,550 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:21,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:28,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:43:28,922 INFO L93 Difference]: Finished difference Result 1107 states and 1694 transitions. [2021-11-25 18:43:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 18:43:28,924 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 283 [2021-11-25 18:43:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:43:28,931 INFO L225 Difference]: With dead ends: 1107 [2021-11-25 18:43:28,931 INFO L226 Difference]: Without dead ends: 606 [2021-11-25 18:43:28,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-11-25 18:43:28,937 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 98 mSDsluCounter, 6073 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 13 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 6653 SdHoareTripleChecker+Invalid, 1415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:43:28,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 6653 Invalid, 1415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1400 Invalid, 2 Unknown, 0 Unchecked, 14.6s Time] [2021-11-25 18:43:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-25 18:43:28,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 568. [2021-11-25 18:43:28,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 359 states have (on average 1.2367688022284122) internal successors, (444), 364 states have internal predecessors, (444), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-25 18:43:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 844 transitions. [2021-11-25 18:43:28,975 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 844 transitions. Word has length 283 [2021-11-25 18:43:28,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:43:28,976 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 844 transitions. [2021-11-25 18:43:28,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.076923076923077) internal successors, (118), 14 states have internal predecessors, (118), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 18:43:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 844 transitions. [2021-11-25 18:43:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-25 18:43:28,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:43:28,980 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:43:29,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-25 18:43:29,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:43:29,195 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:43:29,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:29,195 INFO L85 PathProgramCache]: Analyzing trace with hash -575082312, now seen corresponding path program 1 times [2021-11-25 18:43:29,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:43:29,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2070879946] [2021-11-25 18:43:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:29,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:43:29,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:43:29,199 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:43:29,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-25 18:43:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:43:31,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-25 18:43:31,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:43:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 235 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-11-25 18:43:32,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:43:32,775 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:43:32,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2070879946] [2021-11-25 18:43:32,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2070879946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:43:32,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:43:32,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:43:32,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6614816] [2021-11-25 18:43:32,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:43:32,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:43:32,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:43:32,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:43:32,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:43:32,777 INFO L87 Difference]: Start difference. First operand 568 states and 844 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:43:32,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:43:32,946 INFO L93 Difference]: Finished difference Result 1106 states and 1731 transitions. [2021-11-25 18:43:32,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 18:43:32,948 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 283 [2021-11-25 18:43:32,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:43:32,954 INFO L225 Difference]: With dead ends: 1106 [2021-11-25 18:43:32,954 INFO L226 Difference]: Without dead ends: 574 [2021-11-25 18:43:32,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:43:32,961 INFO L933 BasicCegarLoop]: 627 mSDtfsCounter, 7 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 18:43:32,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1861 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 18:43:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-25 18:43:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 568. [2021-11-25 18:43:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 359 states have (on average 1.2311977715877438) internal successors, (442), 364 states have internal predecessors, (442), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-25 18:43:33,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 842 transitions. [2021-11-25 18:43:33,011 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 842 transitions. Word has length 283 [2021-11-25 18:43:33,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:43:33,012 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 842 transitions. [2021-11-25 18:43:33,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:43:33,012 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 842 transitions. [2021-11-25 18:43:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-25 18:43:33,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:43:33,015 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:43:33,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-25 18:43:33,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:43:33,231 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:43:33,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:33,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1640937912, now seen corresponding path program 1 times [2021-11-25 18:43:33,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:43:33,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540621657] [2021-11-25 18:43:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:33,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:43:33,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:43:33,234 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:43:33,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-25 18:43:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:43:35,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 18:43:35,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:43:36,808 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 252 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-25 18:43:36,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:43:36,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:43:36,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540621657] [2021-11-25 18:43:36,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540621657] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:43:36,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:43:36,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 18:43:36,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372644563] [2021-11-25 18:43:36,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:43:36,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 18:43:36,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:43:36,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 18:43:36,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 18:43:36,811 INFO L87 Difference]: Start difference. First operand 568 states and 842 transitions. Second operand has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 18:43:37,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:43:37,062 INFO L93 Difference]: Finished difference Result 1083 states and 1663 transitions. [2021-11-25 18:43:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 18:43:37,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 291 [2021-11-25 18:43:37,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:43:37,069 INFO L225 Difference]: With dead ends: 1083 [2021-11-25 18:43:37,070 INFO L226 Difference]: Without dead ends: 573 [2021-11-25 18:43:37,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:43:37,076 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 7 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1839 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:43:37,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1839 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 18:43:37,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2021-11-25 18:43:37,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 569. [2021-11-25 18:43:37,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 360 states have (on average 1.2305555555555556) internal successors, (443), 365 states have internal predecessors, (443), 169 states have call successors, (169), 33 states have call predecessors, (169), 38 states have return successors, (231), 171 states have call predecessors, (231), 167 states have call successors, (231) [2021-11-25 18:43:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 843 transitions. [2021-11-25 18:43:37,112 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 843 transitions. Word has length 291 [2021-11-25 18:43:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:43:37,113 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 843 transitions. [2021-11-25 18:43:37,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-11-25 18:43:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 843 transitions. [2021-11-25 18:43:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2021-11-25 18:43:37,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:43:37,116 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:43:37,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-25 18:43:37,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:43:37,336 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:43:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash 129001201, now seen corresponding path program 1 times [2021-11-25 18:43:37,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:43:37,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451349173] [2021-11-25 18:43:37,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:37,339 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:43:37,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:43:37,341 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:43:37,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-25 18:43:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:43:40,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 2494 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 18:43:40,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:43:41,761 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-25 18:43:41,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:43:41,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:43:41,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451349173] [2021-11-25 18:43:41,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451349173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:43:41,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:43:41,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 18:43:41,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683258142] [2021-11-25 18:43:41,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:43:41,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 18:43:41,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:43:41,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 18:43:41,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-25 18:43:41,764 INFO L87 Difference]: Start difference. First operand 569 states and 843 transitions. Second operand has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-25 18:43:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:43:44,202 INFO L93 Difference]: Finished difference Result 1091 states and 1664 transitions. [2021-11-25 18:43:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 18:43:44,203 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 291 [2021-11-25 18:43:44,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:43:44,208 INFO L225 Difference]: With dead ends: 1091 [2021-11-25 18:43:44,208 INFO L226 Difference]: Without dead ends: 583 [2021-11-25 18:43:44,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-25 18:43:44,212 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 4 mSDsluCounter, 4711 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-25 18:43:44,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 5312 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-25 18:43:44,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-25 18:43:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 576. [2021-11-25 18:43:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 365 states have (on average 1.2273972602739727) internal successors, (448), 371 states have internal predecessors, (448), 169 states have call successors, (169), 33 states have call predecessors, (169), 40 states have return successors, (250), 172 states have call predecessors, (250), 167 states have call successors, (250) [2021-11-25 18:43:44,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 867 transitions. [2021-11-25 18:43:44,255 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 867 transitions. Word has length 291 [2021-11-25 18:43:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:43:44,256 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 867 transitions. [2021-11-25 18:43:44,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (32), 2 states have call predecessors, (32), 5 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2021-11-25 18:43:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 867 transitions. [2021-11-25 18:43:44,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-25 18:43:44,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:43:44,260 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:43:44,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-25 18:43:44,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:43:44,479 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:43:44,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:44,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2062563256, now seen corresponding path program 1 times [2021-11-25 18:43:44,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:43:44,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505168367] [2021-11-25 18:43:44,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:44,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:43:44,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:43:44,482 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:43:44,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-25 18:43:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:43:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 2484 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 18:43:47,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:43:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 237 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-11-25 18:43:48,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:43:48,853 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:43:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505168367] [2021-11-25 18:43:48,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505168367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:43:48,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:43:48,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 18:43:48,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740390778] [2021-11-25 18:43:48,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:43:48,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 18:43:48,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:43:48,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 18:43:48,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 18:43:48,856 INFO L87 Difference]: Start difference. First operand 576 states and 867 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:43:52,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:54,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:43:57,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:43:57,808 INFO L93 Difference]: Finished difference Result 1130 states and 1816 transitions. [2021-11-25 18:43:57,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 18:43:57,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) Word has length 287 [2021-11-25 18:43:57,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:43:57,818 INFO L225 Difference]: With dead ends: 1130 [2021-11-25 18:43:57,819 INFO L226 Difference]: Without dead ends: 590 [2021-11-25 18:43:57,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 18:43:57,827 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 15 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2021-11-25 18:43:57,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2384 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 176 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2021-11-25 18:43:57,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-11-25 18:43:57,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 578. [2021-11-25 18:43:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 367 states have (on average 1.2261580381471389) internal successors, (450), 373 states have internal predecessors, (450), 169 states have call successors, (169), 33 states have call predecessors, (169), 40 states have return successors, (250), 172 states have call predecessors, (250), 167 states have call successors, (250) [2021-11-25 18:43:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 869 transitions. [2021-11-25 18:43:57,891 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 869 transitions. Word has length 287 [2021-11-25 18:43:57,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:43:57,892 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 869 transitions. [2021-11-25 18:43:57,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 2 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-25 18:43:57,892 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 869 transitions. [2021-11-25 18:43:57,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-25 18:43:57,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:43:57,896 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:43:57,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-25 18:43:58,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:43:58,113 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:43:58,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:43:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash 181413624, now seen corresponding path program 1 times [2021-11-25 18:43:58,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:43:58,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971763207] [2021-11-25 18:43:58,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:43:58,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:43:58,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:43:58,118 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:43:58,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-25 18:44:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 18:44:07,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-25 18:44:07,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 18:44:09,145 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-25 18:44:09,147 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 [2021-11-25 18:44:10,396 INFO L134 CoverageAnalysis]: Checked inductivity of 502 backedges. 257 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-25 18:44:10,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 18:44:10,397 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 18:44:10,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971763207] [2021-11-25 18:44:10,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971763207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 18:44:10,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 18:44:10,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 18:44:10,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869830686] [2021-11-25 18:44:10,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 18:44:10,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 18:44:10,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 18:44:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 18:44:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-25 18:44:10,401 INFO L87 Difference]: Start difference. First operand 578 states and 869 transitions. Second operand has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 18:44:18,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:20,699 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-25 18:44:28,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 18:44:28,977 INFO L93 Difference]: Finished difference Result 1134 states and 1793 transitions. [2021-11-25 18:44:28,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 18:44:28,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 287 [2021-11-25 18:44:28,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 18:44:28,985 INFO L225 Difference]: With dead ends: 1134 [2021-11-25 18:44:28,985 INFO L226 Difference]: Without dead ends: 592 [2021-11-25 18:44:28,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2021-11-25 18:44:28,990 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 84 mSDsluCounter, 5383 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 5955 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2021-11-25 18:44:28,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 5955 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1171 Invalid, 2 Unknown, 0 Unchecked, 16.9s Time] [2021-11-25 18:44:28,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-25 18:44:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 560. [2021-11-25 18:44:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 349 states have (on average 1.2091690544412608) internal successors, (422), 355 states have internal predecessors, (422), 169 states have call successors, (169), 33 states have call predecessors, (169), 40 states have return successors, (250), 172 states have call predecessors, (250), 167 states have call successors, (250) [2021-11-25 18:44:29,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 841 transitions. [2021-11-25 18:44:29,026 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 841 transitions. Word has length 287 [2021-11-25 18:44:29,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 18:44:29,027 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 841 transitions. [2021-11-25 18:44:29,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.636363636363637) internal successors, (117), 12 states have internal predecessors, (117), 7 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2021-11-25 18:44:29,028 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 841 transitions. [2021-11-25 18:44:29,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-25 18:44:29,031 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 18:44:29,031 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 18:44:29,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-25 18:44:29,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 18:44:29,247 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 18:44:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 18:44:29,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1636995336, now seen corresponding path program 1 times [2021-11-25 18:44:29,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 18:44:29,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672623969] [2021-11-25 18:44:29,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 18:44:29,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 18:44:29,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 18:44:29,251 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 18:44:29,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_757a643c-40c2-49b4-bc3e-a6b91bd3bc33/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process