./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8 --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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:24,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:24,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:24,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:24,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:24,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:24,286 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:24,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:24,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:24,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:24,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:24,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:24,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:24,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:24,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:24,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:24,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:24,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:24,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:24,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:24,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:24,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:24,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:24,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:24,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:24,322 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:24,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:24,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:24,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:24,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:24,326 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:24,327 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:24,328 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:24,337 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:24,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:24,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:24,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:24,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:24,342 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:24,343 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:24,344 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:24,345 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 02:21:24,394 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:24,394 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:24,395 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:24,395 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:24,396 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:24,396 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:24,396 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:21:24,396 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:24,396 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:24,397 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:21:24,397 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:21:24,397 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:24,397 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:21:24,397 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:21:24,398 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:21:24,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:24,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:21:24,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:24,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:24,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:24,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:24,400 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:24,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:24,400 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:24,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:24,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:24,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:24,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:24,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:24,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:24,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:24,402 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:21:24,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:21:24,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:24,402 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:24,402 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:24,402 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_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-07 02:21:24,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:24,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:24,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:24,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:24,753 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:24,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-07 02:21:24,823 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data/108b3ac7a/fcd33bcbf3e8496e884c791bc575b813/FLAG8f0ca2473 [2021-11-07 02:21:25,664 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:25,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-07 02:21:25,719 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data/108b3ac7a/fcd33bcbf3e8496e884c791bc575b813/FLAG8f0ca2473 [2021-11-07 02:21:26,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data/108b3ac7a/fcd33bcbf3e8496e884c791bc575b813 [2021-11-07 02:21:26,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:26,168 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:26,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:26,169 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:26,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:26,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:26,178 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f821e75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:26, skipping insertion in model container [2021-11-07 02:21:26,179 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:26" (1/1) ... [2021-11-07 02:21:26,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:26,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:26,662 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-07 02:21:26,672 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-07 02:21:26,702 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:21:26,708 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:21:27,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,820 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,846 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,848 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,849 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,851 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,852 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,853 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:27,853 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:28,443 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:21:28,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:21:28,449 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:21:28,453 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:21:28,456 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:21:28,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:21:28,463 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:21:28,482 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:21:28,483 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:21:28,484 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:21:28,753 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:21:29,195 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,198 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,245 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,258 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,259 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,292 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,293 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,294 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:29,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:29,422 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 02:21:29,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b293cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:29, skipping insertion in model container [2021-11-07 02:21:29,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:29,423 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 02:21:29,426 INFO L168 Benchmark]: Toolchain (without parser) took 3256.45 ms. Allocated memory was 104.9 MB in the beginning and 146.8 MB in the end (delta: 41.9 MB). Free memory was 76.3 MB in the beginning and 79.2 MB in the end (delta: -2.9 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:29,427 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory is still 82.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:21:29,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3253.85 ms. Allocated memory was 104.9 MB in the beginning and 146.8 MB in the end (delta: 41.9 MB). Free memory was 76.0 MB in the beginning and 79.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:21:29,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 104.9 MB. Free memory is still 82.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3253.85 ms. Allocated memory was 104.9 MB in the beginning and 146.8 MB in the end (delta: 41.9 MB). Free memory was 76.0 MB in the beginning and 79.2 MB in the end (delta: -3.2 MB). Peak memory consumption was 42.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8 --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 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:21:31,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:21:31,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:21:32,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:21:32,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:21:32,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:21:32,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:21:32,026 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:21:32,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:21:32,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:21:32,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:21:32,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:21:32,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:21:32,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:21:32,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:21:32,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:21:32,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:21:32,058 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:21:32,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:21:32,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:21:32,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:21:32,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:21:32,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:21:32,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:21:32,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:21:32,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:21:32,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:21:32,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:21:32,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:21:32,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:21:32,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:21:32,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:21:32,098 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:21:32,099 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:21:32,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:21:32,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:21:32,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:21:32,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:21:32,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:21:32,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:21:32,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:21:32,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 02:21:32,155 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:21:32,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:21:32,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:21:32,158 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:21:32,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:21:32,158 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:21:32,159 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:21:32,159 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:21:32,159 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:21:32,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:21:32,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:21:32,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:21:32,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:21:32,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:21:32,163 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:21:32,163 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:21:32,164 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:21:32,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:21:32,164 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:21:32,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:21:32,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:21:32,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:21:32,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:21:32,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:32,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:21:32,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:21:32,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:21:32,166 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:21:32,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:21:32,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:21:32,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:21:32,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:21:32,168 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_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97e90b5866c6e9df01c589395fdbbe46254bc553e4330f2a669b393b022bbd71 [2021-11-07 02:21:32,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:21:32,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:21:32,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:21:32,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:21:32,668 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:21:32,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-07 02:21:32,757 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data/8412bae09/b54eb21fec9142f89822785d6074a08a/FLAGfa0447295 [2021-11-07 02:21:33,856 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:21:33,857 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i [2021-11-07 02:21:33,916 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data/8412bae09/b54eb21fec9142f89822785d6074a08a/FLAGfa0447295 [2021-11-07 02:21:34,185 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/data/8412bae09/b54eb21fec9142f89822785d6074a08a [2021-11-07 02:21:34,187 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:21:34,189 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:21:34,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:34,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:21:34,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:21:34,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:34" (1/1) ... [2021-11-07 02:21:34,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6345895f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:34, skipping insertion in model container [2021-11-07 02:21:34,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:21:34" (1/1) ... [2021-11-07 02:21:34,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:21:34,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:34,769 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-07 02:21:34,781 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-07 02:21:34,822 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:21:34,836 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:21:36,118 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,119 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,120 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,121 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,139 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,143 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,146 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,149 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:36,717 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:21:36,719 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:21:36,724 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:21:36,726 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:21:36,728 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:21:36,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:21:36,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:21:36,733 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:21:36,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:21:36,735 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:21:37,011 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:21:37,549 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,550 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,589 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,591 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,599 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,602 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,637 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,643 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,644 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,645 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,646 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,647 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:37,782 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 02:21:37,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:21:37,902 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-07 02:21:37,904 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-07 02:21:37,905 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:21:37,906 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:21:37,965 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,969 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,970 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,971 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,988 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:37,989 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,055 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:21:38,056 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:21:38,058 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:21:38,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:21:38,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:21:38,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:21:38,062 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:21:38,063 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:21:38,064 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:21:38,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:21:38,097 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:21:38,258 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,259 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,268 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,269 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,271 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,272 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,287 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,289 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,290 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,290 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:38,368 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:21:38,400 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4495,4508] [2021-11-07 02:21:38,401 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/sv-benchmarks/c/aws-c-common/aws_hash_table_remove_harness.i[4555,4568] [2021-11-07 02:21:38,402 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 02:21:38,403 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 02:21:38,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,443 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,444 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,452 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,453 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,454 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,454 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,455 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,457 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,458 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,458 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 02:21:38,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 02:21:38,536 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 02:21:38,537 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 02:21:38,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 02:21:38,538 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 02:21:38,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 02:21:38,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 02:21:38,539 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 02:21:38,540 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 02:21:38,562 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 02:21:38,714 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,715 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,758 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,758 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,763 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,797 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,799 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,799 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,800 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,801 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 02:21:38,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:21:39,316 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:21:39,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39 WrapperNode [2021-11-07 02:21:39,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:21:39,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:39,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:21:39,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:21:39,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:21:39,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:21:39,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:21:39,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:21:39,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,642 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,750 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:21:39,840 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:21:39,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:21:39,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:21:39,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (1/1) ... [2021-11-07 02:21:39,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:21:39,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:21:39,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:21:39,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:21:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-07 02:21:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 02:21:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 02:21:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:21:39,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:21:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 02:21:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-07 02:21:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:21:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-07 02:21:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 02:21:39,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 02:21:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 02:21:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:21:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 02:21:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 02:21:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 02:21:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 02:21:39,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 02:21:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 02:21:39,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-07 02:22:02,090 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##201: assume !true; [2021-11-07 02:22:02,091 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##269: assume !true; [2021-11-07 02:22:02,091 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##284: assume !true; [2021-11-07 02:22:02,091 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##239: assume !true; [2021-11-07 02:22:02,091 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume !true; [2021-11-07 02:22:02,091 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume !true; [2021-11-07 02:22:02,091 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume !true; [2021-11-07 02:22:02,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:22:02,109 INFO L299 CfgBuilder]: Removed 312 assume(true) statements. [2021-11-07 02:22:02,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:22:02 BoogieIcfgContainer [2021-11-07 02:22:02,112 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:22:02,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:22:02,114 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:22:02,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:22:02,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:21:34" (1/3) ... [2021-11-07 02:22:02,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f84f681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:22:02, skipping insertion in model container [2021-11-07 02:22:02,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:21:39" (2/3) ... [2021-11-07 02:22:02,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f84f681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:22:02, skipping insertion in model container [2021-11-07 02:22:02,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:22:02" (3/3) ... [2021-11-07 02:22:02,124 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_remove_harness.i [2021-11-07 02:22:02,131 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:22:02,131 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-07 02:22:02,216 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:22:02,222 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 [2021-11-07 02:22:02,222 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-07 02:22:02,247 INFO L276 IsEmpty]: Start isEmpty. Operand has 341 states, 323 states have (on average 1.4551083591331269) internal successors, (470), 340 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 02:22:02,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:02,257 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:02,257 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:22:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2037186818, now seen corresponding path program 1 times [2021-11-07 02:22:02,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:02,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213149004] [2021-11-07 02:22:02,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:02,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:02,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:02,290 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:02,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:22:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:07,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:22:07,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:07,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:07,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:07,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213149004] [2021-11-07 02:22:07,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213149004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:07,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:07,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:22:07,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247569002] [2021-11-07 02:22:07,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:22:07,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:07,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:22:07,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:22:07,950 INFO L87 Difference]: Start difference. First operand has 341 states, 323 states have (on average 1.4551083591331269) internal successors, (470), 340 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:08,009 INFO L93 Difference]: Finished difference Result 677 states and 934 transitions. [2021-11-07 02:22:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:22:08,010 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 02:22:08,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:08,025 INFO L225 Difference]: With dead ends: 677 [2021-11-07 02:22:08,026 INFO L226 Difference]: Without dead ends: 333 [2021-11-07 02:22:08,031 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:22:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-07 02:22:08,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-07 02:22:08,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2626582278481013) internal successors, (399), 332 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 399 transitions. [2021-11-07 02:22:08,098 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 399 transitions. Word has length 74 [2021-11-07 02:22:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:08,098 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 399 transitions. [2021-11-07 02:22:08,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 37.0) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 399 transitions. [2021-11-07 02:22:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 02:22:08,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:08,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:08,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:08,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:08,317 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:22:08,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1272180544, now seen corresponding path program 1 times [2021-11-07 02:22:08,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:08,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180444354] [2021-11-07 02:22:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:08,327 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:08,329 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:08,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:22:12,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:12,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 1707 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:22:12,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:13,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:13,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:13,783 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:13,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180444354] [2021-11-07 02:22:13,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180444354] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:13,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:13,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:22:13,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506244532] [2021-11-07 02:22:13,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:22:13,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:13,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:22:13,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:22:13,787 INFO L87 Difference]: Start difference. First operand 333 states and 399 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:14,045 INFO L93 Difference]: Finished difference Result 965 states and 1158 transitions. [2021-11-07 02:22:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:22:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 02:22:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:14,055 INFO L225 Difference]: With dead ends: 965 [2021-11-07 02:22:14,057 INFO L226 Difference]: Without dead ends: 654 [2021-11-07 02:22:14,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:22:14,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2021-11-07 02:22:14,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 336. [2021-11-07 02:22:14,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 319 states have (on average 1.2601880877742946) internal successors, (402), 335 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:14,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 402 transitions. [2021-11-07 02:22:14,117 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 402 transitions. Word has length 74 [2021-11-07 02:22:14,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:14,118 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 402 transitions. [2021-11-07 02:22:14,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 402 transitions. [2021-11-07 02:22:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 02:22:14,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:14,131 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:14,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:14,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:14,345 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:22:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:14,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1002787932, now seen corresponding path program 1 times [2021-11-07 02:22:14,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:14,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619066347] [2021-11-07 02:22:14,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:14,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:14,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:14,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:14,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:22:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:18,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 1710 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:18,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:19,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:19,696 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:19,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619066347] [2021-11-07 02:22:19,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619066347] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:19,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:19,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:22:19,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759991648] [2021-11-07 02:22:19,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:22:19,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:19,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:22:19,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:22:19,699 INFO L87 Difference]: Start difference. First operand 336 states and 402 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:20,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:20,085 INFO L93 Difference]: Finished difference Result 647 states and 775 transitions. [2021-11-07 02:22:20,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:22:20,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 02:22:20,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:20,088 INFO L225 Difference]: With dead ends: 647 [2021-11-07 02:22:20,088 INFO L226 Difference]: Without dead ends: 336 [2021-11-07 02:22:20,089 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:22:20,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-11-07 02:22:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 333. [2021-11-07 02:22:20,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2563291139240507) internal successors, (397), 332 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 397 transitions. [2021-11-07 02:22:20,101 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 397 transitions. Word has length 76 [2021-11-07 02:22:20,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:20,101 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 397 transitions. [2021-11-07 02:22:20,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:20,102 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 397 transitions. [2021-11-07 02:22:20,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 02:22:20,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:20,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:20,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:20,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:20,322 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:22:20,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:20,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1920942895, now seen corresponding path program 1 times [2021-11-07 02:22:20,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:20,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623057687] [2021-11-07 02:22:20,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:20,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:20,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:20,335 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:20,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 02:22:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:25,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 1743 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:22:25,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:25,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:22:26,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:26,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:26,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-07 02:22:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:26,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:26,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623057687] [2021-11-07 02:22:26,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623057687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:26,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:26,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-07 02:22:26,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641054564] [2021-11-07 02:22:26,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:22:26,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:26,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:22:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:22:26,762 INFO L87 Difference]: Start difference. First operand 333 states and 397 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:38,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:38,203 INFO L93 Difference]: Finished difference Result 637 states and 762 transitions. [2021-11-07 02:22:38,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 02:22:38,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 02:22:38,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:38,207 INFO L225 Difference]: With dead ends: 637 [2021-11-07 02:22:38,207 INFO L226 Difference]: Without dead ends: 339 [2021-11-07 02:22:38,208 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:22:38,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-11-07 02:22:38,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 335. [2021-11-07 02:22:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 318 states have (on average 1.2547169811320755) internal successors, (399), 334 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 399 transitions. [2021-11-07 02:22:38,222 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 399 transitions. Word has length 79 [2021-11-07 02:22:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:38,223 INFO L470 AbstractCegarLoop]: Abstraction has 335 states and 399 transitions. [2021-11-07 02:22:38,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 399 transitions. [2021-11-07 02:22:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 02:22:38,225 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:38,225 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:38,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:38,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:38,453 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:22:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:38,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1498005395, now seen corresponding path program 1 times [2021-11-07 02:22:38,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:38,458 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301564216] [2021-11-07 02:22:38,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:38,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:38,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:38,465 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:38,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 02:22:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:42,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 1740 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:22:42,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:43,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:43,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:43,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:43,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301564216] [2021-11-07 02:22:43,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301564216] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:43,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:43,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 02:22:43,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669863794] [2021-11-07 02:22:43,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:22:43,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:43,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:22:43,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:22:43,938 INFO L87 Difference]: Start difference. First operand 335 states and 399 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:22:46,403 INFO L93 Difference]: Finished difference Result 636 states and 760 transitions. [2021-11-07 02:22:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:22:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 02:22:46,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:22:46,416 INFO L225 Difference]: With dead ends: 636 [2021-11-07 02:22:46,416 INFO L226 Difference]: Without dead ends: 333 [2021-11-07 02:22:46,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:22:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-07 02:22:46,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-07 02:22:46,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.25) internal successors, (395), 332 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 395 transitions. [2021-11-07 02:22:46,430 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 395 transitions. Word has length 79 [2021-11-07 02:22:46,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:22:46,431 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 395 transitions. [2021-11-07 02:22:46,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:22:46,432 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 395 transitions. [2021-11-07 02:22:46,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 02:22:46,433 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:22:46,433 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:22:46,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 02:22:46,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:22:46,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:22:46,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:22:46,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1869587508, now seen corresponding path program 1 times [2021-11-07 02:22:46,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:22:46,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1712490165] [2021-11-07 02:22:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:22:46,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:22:46,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:22:46,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:22:46,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 02:22:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:22:51,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 1754 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 02:22:51,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:22:51,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-07 02:22:51,791 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 16 treesize of output 8 [2021-11-07 02:22:52,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:52,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:22:52,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-07 02:22:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:22:52,917 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:22:52,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1712490165] [2021-11-07 02:22:52,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1712490165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:22:52,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:22:52,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 02:22:52,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324783802] [2021-11-07 02:22:52,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:22:52,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:22:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:22:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:22:52,920 INFO L87 Difference]: Start difference. First operand 333 states and 395 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:04,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:04,444 INFO L93 Difference]: Finished difference Result 632 states and 753 transitions. [2021-11-07 02:23:04,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:23:04,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-11-07 02:23:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:04,455 INFO L225 Difference]: With dead ends: 632 [2021-11-07 02:23:04,456 INFO L226 Difference]: Without dead ends: 333 [2021-11-07 02:23:04,457 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 02:23:04,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-11-07 02:23:04,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2021-11-07 02:23:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2468354430379747) internal successors, (394), 332 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:04,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 394 transitions. [2021-11-07 02:23:04,471 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 394 transitions. Word has length 81 [2021-11-07 02:23:04,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:04,471 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 394 transitions. [2021-11-07 02:23:04,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:04,472 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 394 transitions. [2021-11-07 02:23:04,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 02:23:04,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:04,473 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:23:04,537 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 02:23:04,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:04,697 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:23:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2025362653, now seen corresponding path program 1 times [2021-11-07 02:23:04,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:04,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [380043864] [2021-11-07 02:23:04,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:04,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:04,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:04,702 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:04,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 02:23:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:09,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 02:23:09,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:09,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:09,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:10,264 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:10,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [380043864] [2021-11-07 02:23:10,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [380043864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:10,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:10,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:23:10,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816228621] [2021-11-07 02:23:10,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:23:10,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:23:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:23:10,266 INFO L87 Difference]: Start difference. First operand 333 states and 394 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:15,116 INFO L93 Difference]: Finished difference Result 661 states and 779 transitions. [2021-11-07 02:23:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 02:23:15,117 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 02:23:15,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:15,120 INFO L225 Difference]: With dead ends: 661 [2021-11-07 02:23:15,120 INFO L226 Difference]: Without dead ends: 386 [2021-11-07 02:23:15,121 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:23:15,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-07 02:23:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 333. [2021-11-07 02:23:15,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.240506329113924) internal successors, (392), 332 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:15,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 392 transitions. [2021-11-07 02:23:15,136 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 392 transitions. Word has length 82 [2021-11-07 02:23:15,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:15,137 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 392 transitions. [2021-11-07 02:23:15,137 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:15,138 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 392 transitions. [2021-11-07 02:23:15,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 02:23:15,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:15,139 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:23:15,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-07 02:23:15,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:15,354 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:23:15,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:15,354 INFO L85 PathProgramCache]: Analyzing trace with hash -501909251, now seen corresponding path program 1 times [2021-11-07 02:23:15,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:15,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656276428] [2021-11-07 02:23:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:15,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:15,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:15,362 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:15,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 02:23:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:23:20,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1789 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 02:23:20,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:23:20,972 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 32 treesize of output 24 [2021-11-07 02:23:20,981 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 21 treesize of output 13 [2021-11-07 02:23:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:21,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:23:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:23:21,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:23:21,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656276428] [2021-11-07 02:23:21,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656276428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:23:21,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:23:21,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-07 02:23:21,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040062387] [2021-11-07 02:23:21,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 02:23:21,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:23:21,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 02:23:21,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:23:21,692 INFO L87 Difference]: Start difference. First operand 333 states and 392 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:23:55,705 INFO L93 Difference]: Finished difference Result 872 states and 1032 transitions. [2021-11-07 02:23:55,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 02:23:55,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-07 02:23:55,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:23:55,712 INFO L225 Difference]: With dead ends: 872 [2021-11-07 02:23:55,712 INFO L226 Difference]: Without dead ends: 599 [2021-11-07 02:23:55,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 02:23:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-07 02:23:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 333. [2021-11-07 02:23:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2246835443037976) internal successors, (387), 332 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 387 transitions. [2021-11-07 02:23:55,740 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 387 transitions. Word has length 86 [2021-11-07 02:23:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:23:55,741 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 387 transitions. [2021-11-07 02:23:55,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:23:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 387 transitions. [2021-11-07 02:23:55,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 02:23:55,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:23:55,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:23:55,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 02:23:55,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:23:55,965 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:23:55,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:23:55,966 INFO L85 PathProgramCache]: Analyzing trace with hash 215845281, now seen corresponding path program 1 times [2021-11-07 02:23:55,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:23:55,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869995729] [2021-11-07 02:23:55,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:23:55,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:23:55,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:23:55,972 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:23:55,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 02:24:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:01,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1815 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 02:24:01,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:02,185 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 32 treesize of output 24 [2021-11-07 02:24:02,198 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 21 treesize of output 13 [2021-11-07 02:24:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:02,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:02,935 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-07 02:24:02,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-07 02:24:02,959 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-07 02:24:02,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-07 02:24:03,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:03,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:03,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869995729] [2021-11-07 02:24:03,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869995729] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:03,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:03,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-07 02:24:03,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457562731] [2021-11-07 02:24:03,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 02:24:03,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:03,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 02:24:03,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-07 02:24:03,096 INFO L87 Difference]: Start difference. First operand 333 states and 387 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:26,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:26,586 INFO L93 Difference]: Finished difference Result 886 states and 1029 transitions. [2021-11-07 02:24:26,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 02:24:26,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-07 02:24:26,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:26,592 INFO L225 Difference]: With dead ends: 886 [2021-11-07 02:24:26,592 INFO L226 Difference]: Without dead ends: 640 [2021-11-07 02:24:26,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=255, Invalid=615, Unknown=0, NotChecked=0, Total=870 [2021-11-07 02:24:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2021-11-07 02:24:26,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 333. [2021-11-07 02:24:26,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 316 states have (on average 1.2215189873417722) internal successors, (386), 332 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 386 transitions. [2021-11-07 02:24:26,622 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 386 transitions. Word has length 88 [2021-11-07 02:24:26,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:26,624 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 386 transitions. [2021-11-07 02:24:26,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:26,625 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 386 transitions. [2021-11-07 02:24:26,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 02:24:26,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:26,627 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:26,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:26,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:26,853 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:24:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -333291741, now seen corresponding path program 1 times [2021-11-07 02:24:26,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:26,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720056837] [2021-11-07 02:24:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:26,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:26,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:26,861 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:26,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 02:24:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:32,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 02:24:32,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:32,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:32,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:32,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:32,923 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:32,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720056837] [2021-11-07 02:24:32,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720056837] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:32,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:32,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 02:24:32,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295963375] [2021-11-07 02:24:32,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 02:24:32,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:32,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 02:24:32,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:24:32,925 INFO L87 Difference]: Start difference. First operand 333 states and 386 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:33,309 INFO L93 Difference]: Finished difference Result 417 states and 500 transitions. [2021-11-07 02:24:33,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 02:24:33,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-11-07 02:24:33,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:33,312 INFO L225 Difference]: With dead ends: 417 [2021-11-07 02:24:33,313 INFO L226 Difference]: Without dead ends: 411 [2021-11-07 02:24:33,313 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 02:24:33,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-07 02:24:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 327. [2021-11-07 02:24:33,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 313 states have (on average 1.2140575079872205) internal successors, (380), 326 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 380 transitions. [2021-11-07 02:24:33,337 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 380 transitions. Word has length 89 [2021-11-07 02:24:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:33,338 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 380 transitions. [2021-11-07 02:24:33,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 380 transitions. [2021-11-07 02:24:33,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 02:24:33,340 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:33,340 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:33,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:33,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:33,562 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:24:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash -581891221, now seen corresponding path program 1 times [2021-11-07 02:24:33,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:33,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455999279] [2021-11-07 02:24:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:33,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:33,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:33,568 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:33,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 02:24:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:39,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:24:39,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:39,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:39,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:39,548 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:39,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455999279] [2021-11-07 02:24:39,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455999279] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:39,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:39,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 02:24:39,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264918777] [2021-11-07 02:24:39,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:24:39,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:39,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:24:39,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:24:39,551 INFO L87 Difference]: Start difference. First operand 327 states and 380 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:40,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:40,203 INFO L93 Difference]: Finished difference Result 692 states and 834 transitions. [2021-11-07 02:24:40,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 02:24:40,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 02:24:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:40,209 INFO L225 Difference]: With dead ends: 692 [2021-11-07 02:24:40,209 INFO L226 Difference]: Without dead ends: 690 [2021-11-07 02:24:40,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:24:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-11-07 02:24:40,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 325. [2021-11-07 02:24:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 312 states have (on average 1.2115384615384615) internal successors, (378), 324 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 378 transitions. [2021-11-07 02:24:40,236 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 378 transitions. Word has length 96 [2021-11-07 02:24:40,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:40,237 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 378 transitions. [2021-11-07 02:24:40,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:40,237 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 378 transitions. [2021-11-07 02:24:40,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 02:24:40,239 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:40,239 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:40,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:40,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:40,458 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:24:40,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:40,458 INFO L85 PathProgramCache]: Analyzing trace with hash -620538052, now seen corresponding path program 1 times [2021-11-07 02:24:40,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:40,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324672539] [2021-11-07 02:24:40,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:40,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:40,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:40,465 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:40,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 02:24:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:46,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 1921 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:24:46,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:46,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:46,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:47,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:47,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:47,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1324672539] [2021-11-07 02:24:47,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1324672539] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:47,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:47,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 02:24:47,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390832132] [2021-11-07 02:24:47,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 02:24:47,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:47,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 02:24:47,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 02:24:47,189 INFO L87 Difference]: Start difference. First operand 325 states and 378 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:47,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:24:47,531 INFO L93 Difference]: Finished difference Result 803 states and 944 transitions. [2021-11-07 02:24:47,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:24:47,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-07 02:24:47,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:24:47,551 INFO L225 Difference]: With dead ends: 803 [2021-11-07 02:24:47,551 INFO L226 Difference]: Without dead ends: 580 [2021-11-07 02:24:47,552 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:24:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-07 02:24:47,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 357. [2021-11-07 02:24:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 344 states have (on average 1.2005813953488371) internal successors, (413), 356 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:47,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 413 transitions. [2021-11-07 02:24:47,581 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 413 transitions. Word has length 102 [2021-11-07 02:24:47,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:24:47,581 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 413 transitions. [2021-11-07 02:24:47,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:24:47,582 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 413 transitions. [2021-11-07 02:24:47,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 02:24:47,583 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:24:47,583 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:24:47,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 02:24:47,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:24:47,797 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:24:47,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:24:47,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1631655302, now seen corresponding path program 1 times [2021-11-07 02:24:47,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:24:47,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190708928] [2021-11-07 02:24:47,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:24:47,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:24:47,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:24:47,803 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:24:47,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 02:24:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:24:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1918 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 02:24:53,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:24:54,901 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 32 treesize of output 24 [2021-11-07 02:24:54,909 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 21 treesize of output 13 [2021-11-07 02:24:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:55,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:24:56,193 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-07 02:24:56,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-07 02:24:56,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:24:56,456 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:24:56,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190708928] [2021-11-07 02:24:56,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190708928] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:24:56,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:24:56,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 13 [2021-11-07 02:24:56,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750026132] [2021-11-07 02:24:56,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 02:24:56,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:24:56,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 02:24:56,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:24:56,458 INFO L87 Difference]: Start difference. First operand 357 states and 413 transitions. Second operand has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:27,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:27,903 INFO L93 Difference]: Finished difference Result 848 states and 983 transitions. [2021-11-07 02:25:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 02:25:27,904 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2021-11-07 02:25:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:27,909 INFO L225 Difference]: With dead ends: 848 [2021-11-07 02:25:27,909 INFO L226 Difference]: Without dead ends: 632 [2021-11-07 02:25:27,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=537, Invalid=1355, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 02:25:27,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-07 02:25:27,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 369. [2021-11-07 02:25:27,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 356 states have (on average 1.196629213483146) internal successors, (426), 368 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 426 transitions. [2021-11-07 02:25:27,955 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 426 transitions. Word has length 102 [2021-11-07 02:25:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:27,956 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 426 transitions. [2021-11-07 02:25:27,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.461538461538462) internal successors, (110), 13 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:27,956 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 426 transitions. [2021-11-07 02:25:27,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 02:25:27,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:27,958 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:25:28,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:28,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:25:28,169 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:25:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:28,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1278121790, now seen corresponding path program 1 times [2021-11-07 02:25:28,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:28,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59723149] [2021-11-07 02:25:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:28,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:28,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:28,178 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:28,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 02:25:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:34,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 02:25:34,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:25:35,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:36,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:25:36,165 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:36,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59723149] [2021-11-07 02:25:36,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59723149] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:36,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:25:36,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-07 02:25:36,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418367578] [2021-11-07 02:25:36,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 02:25:36,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:36,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 02:25:36,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 02:25:36,168 INFO L87 Difference]: Start difference. First operand 369 states and 426 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:37,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:37,115 INFO L93 Difference]: Finished difference Result 969 states and 1139 transitions. [2021-11-07 02:25:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 02:25:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 02:25:37,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:37,122 INFO L225 Difference]: With dead ends: 969 [2021-11-07 02:25:37,123 INFO L226 Difference]: Without dead ends: 746 [2021-11-07 02:25:37,124 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-07 02:25:37,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2021-11-07 02:25:37,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 383. [2021-11-07 02:25:37,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 370 states have (on average 1.2) internal successors, (444), 382 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 444 transitions. [2021-11-07 02:25:37,179 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 444 transitions. Word has length 103 [2021-11-07 02:25:37,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:37,180 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 444 transitions. [2021-11-07 02:25:37,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:37,181 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 444 transitions. [2021-11-07 02:25:37,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 02:25:37,182 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:37,183 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:25:37,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:37,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:25:37,409 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:25:37,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -647904125, now seen corresponding path program 1 times [2021-11-07 02:25:37,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:37,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167811686] [2021-11-07 02:25:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:37,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:37,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:37,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:37,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 02:25:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:25:43,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 02:25:43,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:25:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:25:44,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:25:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:25:44,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:25:44,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167811686] [2021-11-07 02:25:44,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167811686] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:25:44,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:25:44,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 02:25:44,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652373286] [2021-11-07 02:25:44,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 02:25:44,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:25:44,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 02:25:44,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:25:44,402 INFO L87 Difference]: Start difference. First operand 383 states and 444 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:25:44,487 INFO L93 Difference]: Finished difference Result 527 states and 612 transitions. [2021-11-07 02:25:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 02:25:44,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 02:25:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:25:44,491 INFO L225 Difference]: With dead ends: 527 [2021-11-07 02:25:44,492 INFO L226 Difference]: Without dead ends: 383 [2021-11-07 02:25:44,495 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 02:25:44,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-11-07 02:25:44,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2021-11-07 02:25:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 370 states have (on average 1.1945945945945946) internal successors, (442), 382 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:44,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 442 transitions. [2021-11-07 02:25:44,547 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 442 transitions. Word has length 103 [2021-11-07 02:25:44,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:25:44,548 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 442 transitions. [2021-11-07 02:25:44,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:25:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 442 transitions. [2021-11-07 02:25:44,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 02:25:44,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:25:44,551 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:25:44,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 02:25:44,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:25:44,765 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-07 02:25:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:25:44,766 INFO L85 PathProgramCache]: Analyzing trace with hash -389738687, now seen corresponding path program 1 times [2021-11-07 02:25:44,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:25:44,772 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518469485] [2021-11-07 02:25:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:25:44,772 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:25:44,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:25:44,774 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:25:44,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a74a1ea1-eccd-4031-b6a9-5c84daa61fad/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process