./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_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_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/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_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/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_34e33954-b548-4b1d-9327-80bd30729a1c/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 ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:31,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:31,440 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:31,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:31,487 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:31,489 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:31,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:31,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:31,496 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:31,498 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:31,499 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:31,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:31,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:31,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:31,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:31,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:31,509 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:31,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:31,513 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:31,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:31,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:31,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:31,522 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:31,523 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:31,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:31,539 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:31,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:31,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:31,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:31,543 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:31,544 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:31,545 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:31,546 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:31,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:31,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:31,552 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:31,553 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:31,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:31,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:31,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:31,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:31,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:53:31,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:31,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:31,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:31,617 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:31,617 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:31,618 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:31,618 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:53:31,618 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:31,626 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:31,626 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:53:31,626 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:53:31,626 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:31,627 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:53:31,627 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:53:31,627 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:53:31,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:31,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:53:31,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:31,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:31,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:31,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:31,630 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:31,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:31,630 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:31,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:31,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:31,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:31,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:31,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:31,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:31,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:31,632 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:53:31,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:53:31,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:31,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:31,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:31,634 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_34e33954-b548-4b1d-9327-80bd30729a1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 [2021-11-07 00:53:31,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:31,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:31,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:31,970 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:31,971 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:31,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2021-11-07 00:53:32,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data/13e2373a0/8cd1c45f260c44ad965e4c53135bcb11/FLAG6ca167954 [2021-11-07 00:53:32,968 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:32,969 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2021-11-07 00:53:33,019 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data/13e2373a0/8cd1c45f260c44ad965e4c53135bcb11/FLAG6ca167954 [2021-11-07 00:53:33,448 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data/13e2373a0/8cd1c45f260c44ad965e4c53135bcb11 [2021-11-07 00:53:33,451 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:33,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:33,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:33,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:33,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:33,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:33" (1/1) ... [2021-11-07 00:53:33,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7e3fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:33, skipping insertion in model container [2021-11-07 00:53:33,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:33" (1/1) ... [2021-11-07 00:53:33,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:33,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:33,960 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_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2021-11-07 00:53:33,968 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_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2021-11-07 00:53:33,991 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 00:53:33,997 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 00:53:34,954 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,978 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,979 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,981 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,982 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,984 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,986 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:34,987 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:35,380 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 00:53:35,381 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 00:53:35,383 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 00:53:35,384 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 00:53:35,386 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 00:53:35,387 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 00:53:35,388 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 00:53:35,389 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 00:53:35,390 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 00:53:35,391 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 00:53:35,594 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 00:53:35,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:35,712 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 00:53:35,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5f39a64c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:35, skipping insertion in model container [2021-11-07 00:53:35,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:35,714 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:53:35,716 INFO L168 Benchmark]: Toolchain (without parser) took 2261.99 ms. Allocated memory is still 107.0 MB. Free memory was 66.1 MB in the beginning and 75.4 MB in the end (delta: -9.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:35,717 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 51.1 MB in the beginning and 51.0 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:53:35,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2258.74 ms. Allocated memory is still 107.0 MB. Free memory was 65.9 MB in the beginning and 75.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-11-07 00:53:35,720 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 51.1 MB in the beginning and 51.0 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2258.74 ms. Allocated memory is still 107.0 MB. Free memory was 65.9 MB in the beginning and 75.4 MB in the end (delta: -9.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7037]: 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_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/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_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/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_34e33954-b548-4b1d-9327-80bd30729a1c/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 ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:53:38,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:53:38,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:53:38,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:53:38,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:53:38,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:53:38,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:53:38,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:53:38,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:53:38,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:53:38,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:53:38,238 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:53:38,238 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:53:38,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:53:38,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:53:38,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:53:38,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:53:38,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:53:38,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:53:38,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:53:38,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:53:38,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:53:38,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:53:38,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:53:38,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:53:38,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:53:38,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:53:38,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:53:38,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:53:38,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:53:38,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:53:38,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:53:38,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:53:38,268 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:53:38,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:53:38,270 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:53:38,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:53:38,271 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:53:38,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:53:38,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:53:38,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:53:38,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:53:38,318 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:53:38,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:53:38,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:53:38,320 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:53:38,321 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:53:38,321 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:53:38,321 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:53:38,321 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:53:38,322 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:53:38,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:53:38,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:53:38,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:53:38,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:53:38,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:53:38,325 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:53:38,326 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:53:38,326 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:53:38,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:53:38,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:53:38,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:53:38,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:53:38,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:53:38,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:53:38,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:38,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:53:38,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:53:38,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:53:38,329 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:53:38,329 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:38,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:53:38,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:53:38,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:53:38,330 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_34e33954-b548-4b1d-9327-80bd30729a1c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ce5362e495562dfaea277a751eacbf753e9d90aa85c88e38ea1b10dbc078ec49 [2021-11-07 00:53:38,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:53:38,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:53:38,772 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:53:38,773 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:53:38,775 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:53:38,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2021-11-07 00:53:38,851 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data/bc1bdc1ee/4c1ad63a46c649119c6348f3c5f29eef/FLAG12f3230c0 [2021-11-07 00:53:39,897 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:53:39,898 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i [2021-11-07 00:53:39,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data/bc1bdc1ee/4c1ad63a46c649119c6348f3c5f29eef/FLAG12f3230c0 [2021-11-07 00:53:40,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/data/bc1bdc1ee/4c1ad63a46c649119c6348f3c5f29eef [2021-11-07 00:53:40,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:53:40,321 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:53:40,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:40,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:53:40,327 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:53:40,328 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:40" (1/1) ... [2021-11-07 00:53:40,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e0a6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:40, skipping insertion in model container [2021-11-07 00:53:40,330 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:53:40" (1/1) ... [2021-11-07 00:53:40,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:53:40,493 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:40,828 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_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2021-11-07 00:53:40,835 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_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2021-11-07 00:53:40,864 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 00:53:40,878 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 00:53:41,727 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,728 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,729 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,730 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,731 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,749 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,750 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,752 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,753 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,756 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,757 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,758 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:41,759 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,275 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 00:53:42,283 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 00:53:42,285 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 00:53:42,286 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 00:53:42,288 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 00:53:42,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 00:53:42,289 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 00:53:42,290 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 00:53:42,291 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 00:53:42,293 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 00:53:42,482 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 00:53:42,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:42,546 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:53:42,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:53:42,597 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_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2021-11-07 00:53:42,597 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_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2021-11-07 00:53:42,599 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 00:53:42,600 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 00:53:42,671 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,676 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,693 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,704 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,705 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,706 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,707 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,708 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,709 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,764 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 00:53:42,765 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 00:53:42,770 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 00:53:42,771 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 00:53:42,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 00:53:42,778 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 00:53:42,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 00:53:42,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 00:53:42,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 00:53:42,780 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 00:53:42,833 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 00:53:42,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:42,865 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:53:42,878 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_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4494,4507] [2021-11-07 00:53:42,878 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_34e33954-b548-4b1d-9327-80bd30729a1c/sv-benchmarks/c/aws-c-common/aws_linked_list_rend_harness.i[4554,4567] [2021-11-07 00:53:42,880 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 00:53:42,881 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 00:53:42,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,914 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,915 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,915 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,922 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,923 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,924 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,929 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,930 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,931 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:53:42,973 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 00:53:42,974 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 00:53:42,975 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 00:53:42,976 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 00:53:42,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 00:53:42,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 00:53:42,978 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 00:53:42,979 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 00:53:42,979 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 00:53:42,980 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 00:53:43,034 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 00:53:43,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:53:43,347 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:53:43,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43 WrapperNode [2021-11-07 00:53:43,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:53:43,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:43,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:53:43,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:53:43,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:53:43,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:53:43,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:53:43,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:53:43,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:53:43,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:53:43,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:53:43,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:53:43,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (1/1) ... [2021-11-07 00:53:43,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:53:43,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:53:43,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:53:43,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:53:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:53:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:53:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:53:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:53:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:53:43,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:53:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:53:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:53:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:53:44,738 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:53:44,738 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-07 00:53:44,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:44 BoogieIcfgContainer [2021-11-07 00:53:44,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:53:44,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:53:44,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:53:44,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:53:44,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:53:40" (1/3) ... [2021-11-07 00:53:44,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174291ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:44, skipping insertion in model container [2021-11-07 00:53:44,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:53:43" (2/3) ... [2021-11-07 00:53:44,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174291ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:53:44, skipping insertion in model container [2021-11-07 00:53:44,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:53:44" (3/3) ... [2021-11-07 00:53:44,749 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rend_harness.i [2021-11-07 00:53:44,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:53:44,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 00:53:44,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:53:44,845 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 00:53:44,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 00:53:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 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 00:53:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 00:53:44,874 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:44,875 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] [2021-11-07 00:53:44,875 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:44,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:44,882 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-07 00:53:44,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:44,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858992102] [2021-11-07 00:53:44,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:44,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:44,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:44,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:44,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:53:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:45,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:53:45,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:45,451 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 00:53:45,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:45,608 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 00:53:45,609 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:45,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858992102] [2021-11-07 00:53:45,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858992102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:45,610 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:45,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:53:45,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714392066] [2021-11-07 00:53:45,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:53:45,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:53:45,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:53:45,642 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 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 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 00:53:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:45,690 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-07 00:53:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:53:45,691 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 41 [2021-11-07 00:53:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:45,705 INFO L225 Difference]: With dead ends: 224 [2021-11-07 00:53:45,705 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 00:53:45,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 80 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 00:53:45,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 00:53:45,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 00:53:45,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 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 00:53:45,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-07 00:53:45,773 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-07 00:53:45,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:45,774 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-07 00:53:45,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 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 00:53:45,775 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-07 00:53:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 00:53:45,780 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:45,780 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] [2021-11-07 00:53:45,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:46,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:46,006 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:46,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:46,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-07 00:53:46,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:46,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623730182] [2021-11-07 00:53:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:46,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:46,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:46,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:46,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:53:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:46,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:53:46,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:46,487 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 00:53:46,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:46,605 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 00:53:46,605 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:46,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623730182] [2021-11-07 00:53:46,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623730182] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:46,606 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:46,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:53:46,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276392578] [2021-11-07 00:53:46,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:46,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:46,614 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 00:53:46,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:46,725 INFO L93 Difference]: Finished difference Result 208 states and 294 transitions. [2021-11-07 00:53:46,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:53:46,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-07 00:53:46,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:46,731 INFO L225 Difference]: With dead ends: 208 [2021-11-07 00:53:46,731 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 00:53:46,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 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 00:53:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 00:53:46,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 00:53:46,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 108 states have internal predecessors, (150), 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 00:53:46,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 150 transitions. [2021-11-07 00:53:46,755 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 150 transitions. Word has length 41 [2021-11-07 00:53:46,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:46,755 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 150 transitions. [2021-11-07 00:53:46,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 00:53:46,756 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 150 transitions. [2021-11-07 00:53:46,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 00:53:46,761 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:46,761 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] [2021-11-07 00:53:46,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:46,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:46,987 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:46,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:46,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-07 00:53:46,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:46,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280511283] [2021-11-07 00:53:46,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:46,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:46,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:46,991 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:47,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:53:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:47,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:53:47,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:47,323 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 00:53:47,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:47,420 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 00:53:47,421 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:47,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280511283] [2021-11-07 00:53:47,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280511283] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:47,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:47,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 00:53:47,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980164] [2021-11-07 00:53:47,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:53:47,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:47,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:53:47,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:53:47,424 INFO L87 Difference]: Start difference. First operand 109 states and 150 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 00:53:47,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:47,496 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2021-11-07 00:53:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:53:47,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 41 [2021-11-07 00:53:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:47,498 INFO L225 Difference]: With dead ends: 210 [2021-11-07 00:53:47,498 INFO L226 Difference]: Without dead ends: 127 [2021-11-07 00:53:47,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 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 00:53:47,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-07 00:53:47,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2021-11-07 00:53:47,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 108 states have internal predecessors, (148), 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 00:53:47,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2021-11-07 00:53:47,510 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 41 [2021-11-07 00:53:47,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:47,510 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2021-11-07 00:53:47,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 00:53:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2021-11-07 00:53:47,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 00:53:47,512 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:47,512 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] [2021-11-07 00:53:47,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:47,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:47,721 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:47,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-07 00:53:47,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:47,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [609239909] [2021-11-07 00:53:47,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:47,723 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:47,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:47,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:47,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 00:53:48,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:48,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:53:48,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:48,211 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 00:53:48,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:48,339 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 00:53:48,340 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:48,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [609239909] [2021-11-07 00:53:48,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [609239909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:48,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:48,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:53:48,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864910670] [2021-11-07 00:53:48,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:53:48,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:48,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:53:48,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:48,344 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 00:53:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:48,552 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2021-11-07 00:53:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:53:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 45 [2021-11-07 00:53:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:48,554 INFO L225 Difference]: With dead ends: 217 [2021-11-07 00:53:48,555 INFO L226 Difference]: Without dead ends: 135 [2021-11-07 00:53:48,555 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 00:53:48,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-07 00:53:48,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2021-11-07 00:53:48,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.380952380952381) internal successors, (145), 108 states have internal predecessors, (145), 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 00:53:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2021-11-07 00:53:48,564 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 45 [2021-11-07 00:53:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:48,564 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2021-11-07 00:53:48,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 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 00:53:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2021-11-07 00:53:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 00:53:48,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:48,566 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] [2021-11-07 00:53:48,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:48,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:48,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:48,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:48,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-07 00:53:48,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:48,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329470962] [2021-11-07 00:53:48,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:48,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:48,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:48,783 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:48,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:53:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:49,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:53:49,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:49,268 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 00:53:49,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:49,428 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 00:53:49,429 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:49,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329470962] [2021-11-07 00:53:49,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329470962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:49,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:49,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-07 00:53:49,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562600681] [2021-11-07 00:53:49,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:53:49,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:49,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:53:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 00:53:49,431 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 00:53:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:49,841 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2021-11-07 00:53:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 00:53:49,842 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2021-11-07 00:53:49,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:49,844 INFO L225 Difference]: With dead ends: 296 [2021-11-07 00:53:49,844 INFO L226 Difference]: Without dead ends: 213 [2021-11-07 00:53:49,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 00:53:49,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-07 00:53:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2021-11-07 00:53:49,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 111 states have internal predecessors, (148), 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 00:53:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2021-11-07 00:53:49,858 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 49 [2021-11-07 00:53:49,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:49,859 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2021-11-07 00:53:49,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 00:53:49,859 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2021-11-07 00:53:49,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 00:53:49,860 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:49,861 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] [2021-11-07 00:53:49,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:50,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:50,078 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:50,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-07 00:53:50,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:50,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659519148] [2021-11-07 00:53:50,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:50,079 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:50,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:50,081 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:50,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 00:53:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:50,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:53:50,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:50,626 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 00:53:50,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:50,808 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 00:53:50,808 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:50,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659519148] [2021-11-07 00:53:50,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659519148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:50,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:50,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-07 00:53:50,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863188780] [2021-11-07 00:53:50,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:53:50,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:50,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:53:50,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:50,816 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 00:53:51,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:51,375 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2021-11-07 00:53:51,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:53:51,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 51 [2021-11-07 00:53:51,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:51,379 INFO L225 Difference]: With dead ends: 335 [2021-11-07 00:53:51,379 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 00:53:51,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:53:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 00:53:51,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 117. [2021-11-07 00:53:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 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 00:53:51,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 154 transitions. [2021-11-07 00:53:51,409 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 154 transitions. Word has length 51 [2021-11-07 00:53:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:51,410 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 154 transitions. [2021-11-07 00:53:51,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 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 00:53:51,410 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 154 transitions. [2021-11-07 00:53:51,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 00:53:51,414 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:51,414 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] [2021-11-07 00:53:51,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:51,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:51,630 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:51,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:51,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-07 00:53:51,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:51,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524342170] [2021-11-07 00:53:51,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:51,631 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:51,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:51,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:51,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:53:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:52,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 00:53:52,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:52,311 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 00:53:52,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:52,489 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 00:53:52,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:52,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524342170] [2021-11-07 00:53:52,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524342170] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:52,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:52,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 00:53:52,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678821488] [2021-11-07 00:53:52,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 00:53:52,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:52,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 00:53:52,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:52,491 INFO L87 Difference]: Start difference. First operand 117 states and 154 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 00:53:52,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:52,981 INFO L93 Difference]: Finished difference Result 312 states and 405 transitions. [2021-11-07 00:53:52,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:53:52,982 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-11-07 00:53:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:52,983 INFO L225 Difference]: With dead ends: 312 [2021-11-07 00:53:52,983 INFO L226 Difference]: Without dead ends: 215 [2021-11-07 00:53:52,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 00:53:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-07 00:53:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 120. [2021-11-07 00:53:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.353448275862069) internal successors, (157), 119 states have internal predecessors, (157), 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 00:53:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-11-07 00:53:52,993 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 61 [2021-11-07 00:53:52,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:52,994 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-11-07 00:53:52,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 00:53:52,994 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-11-07 00:53:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 00:53:52,995 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:52,996 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] [2021-11-07 00:53:53,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:53,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:53,213 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:53,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:53,213 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-07 00:53:53,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:53,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888477444] [2021-11-07 00:53:53,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:53,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:53,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:53,215 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:53,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 00:53:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:53,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 00:53:53,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:53,763 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 00:53:53,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:53,912 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 00:53:53,913 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:53,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888477444] [2021-11-07 00:53:53,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888477444] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:53,913 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:53:53,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 00:53:53,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771556515] [2021-11-07 00:53:53,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 00:53:53,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:53,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 00:53:53,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 00:53:53,915 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 00:53:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:54,025 INFO L93 Difference]: Finished difference Result 259 states and 326 transitions. [2021-11-07 00:53:54,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 00:53:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 61 [2021-11-07 00:53:54,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:54,027 INFO L225 Difference]: With dead ends: 259 [2021-11-07 00:53:54,027 INFO L226 Difference]: Without dead ends: 166 [2021-11-07 00:53:54,027 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 00:53:54,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-07 00:53:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2021-11-07 00:53:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3362068965517242) internal successors, (155), 119 states have internal predecessors, (155), 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 00:53:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2021-11-07 00:53:54,037 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 61 [2021-11-07 00:53:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:54,037 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2021-11-07 00:53:54,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 00:53:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2021-11-07 00:53:54,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 00:53:54,038 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:54,038 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] [2021-11-07 00:53:54,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:54,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:53:54,256 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:54,257 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-07 00:53:54,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:54,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155940978] [2021-11-07 00:53:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:54,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:54,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:54,258 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:54,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:53:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:54,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 00:53:54,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:55,159 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 00:53:55,166 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 00:53:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:53:55,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:55,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 00:53:55,674 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:53:55,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155940978] [2021-11-07 00:53:55,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155940978] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:53:55,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1656920035] [2021-11-07 00:53:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:55,675 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:55,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:53:55,680 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:53:55,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 00:53:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:56,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:53:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:56,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:53:56,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:53:56,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:53:56,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1656920035] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:53:56,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:53:56,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8, 8] total 14 [2021-11-07 00:53:56,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386401830] [2021-11-07 00:53:56,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 00:53:56,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:53:56,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 00:53:56,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:53:56,619 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 00:53:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:53:56,842 INFO L93 Difference]: Finished difference Result 290 states and 357 transitions. [2021-11-07 00:53:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 00:53:56,843 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2021-11-07 00:53:56,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:53:56,844 INFO L225 Difference]: With dead ends: 290 [2021-11-07 00:53:56,845 INFO L226 Difference]: Without dead ends: 195 [2021-11-07 00:53:56,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-07 00:53:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-07 00:53:56,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2021-11-07 00:53:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 119 states have internal predecessors, (153), 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 00:53:56,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2021-11-07 00:53:56,854 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 65 [2021-11-07 00:53:56,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:53:56,855 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2021-11-07 00:53:56,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 00:53:56,855 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2021-11-07 00:53:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 00:53:56,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:53:56,858 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:53:56,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:57,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:53:57,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:53:57,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:53:57,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:53:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-07 00:53:57,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:53:57,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547021465] [2021-11-07 00:53:57,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:53:57,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:53:57,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:53:57,273 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:53:57,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:53:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:53:57,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 00:53:57,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:53:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:53:58,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:01,730 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:01,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-07 00:54:01,792 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-07 00:54:01,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-07 00:54:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:02,015 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:02,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547021465] [2021-11-07 00:54:02,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547021465] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:02,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:02,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-07 00:54:02,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816712294] [2021-11-07 00:54:02,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 00:54:02,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 00:54:02,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:54:02,016 INFO L87 Difference]: Start difference. First operand 120 states and 153 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 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 00:54:03,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:03,321 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2021-11-07 00:54:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 00:54:03,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 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 67 [2021-11-07 00:54:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:03,324 INFO L225 Difference]: With dead ends: 164 [2021-11-07 00:54:03,324 INFO L226 Difference]: Without dead ends: 124 [2021-11-07 00:54:03,324 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-11-07 00:54:03,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-07 00:54:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-07 00:54:03,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 121 states have internal predecessors, (155), 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 00:54:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2021-11-07 00:54:03,336 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 67 [2021-11-07 00:54:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:03,337 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2021-11-07 00:54:03,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 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 00:54:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2021-11-07 00:54:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 00:54:03,338 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:03,338 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:03,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:03,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:03,561 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:54:03,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:03,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-07 00:54:03,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:03,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27015363] [2021-11-07 00:54:03,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:03,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:03,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:03,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:03,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 00:54:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:04,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 00:54:04,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:04,488 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 00:54:04,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-07 00:54:05,511 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 41 treesize of output 29 [2021-11-07 00:54:05,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:05,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:06,085 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 210 treesize of output 198 [2021-11-07 00:54:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:06,356 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:06,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27015363] [2021-11-07 00:54:06,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27015363] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:06,357 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:06,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-07 00:54:06,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703520388] [2021-11-07 00:54:06,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 00:54:06,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 00:54:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-07 00:54:06,359 INFO L87 Difference]: Start difference. First operand 122 states and 155 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 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 00:54:08,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:08,904 INFO L93 Difference]: Finished difference Result 368 states and 471 transitions. [2021-11-07 00:54:08,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 00:54:08,906 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 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 67 [2021-11-07 00:54:08,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:08,908 INFO L225 Difference]: With dead ends: 368 [2021-11-07 00:54:08,908 INFO L226 Difference]: Without dead ends: 262 [2021-11-07 00:54:08,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-11-07 00:54:08,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-07 00:54:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 130. [2021-11-07 00:54:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.2936507936507937) internal successors, (163), 129 states have internal predecessors, (163), 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 00:54:08,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2021-11-07 00:54:08,923 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 67 [2021-11-07 00:54:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:08,923 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2021-11-07 00:54:08,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 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 00:54:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2021-11-07 00:54:08,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 00:54:08,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:08,925 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:08,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 00:54:09,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:09,161 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:54:09,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-07 00:54:09,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:09,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575138747] [2021-11-07 00:54:09,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:09,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:09,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:09,163 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:09,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:54:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:09,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 00:54:09,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:10,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:10,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:13,697 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:13,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-07 00:54:13,718 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-07 00:54:13,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-07 00:54:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 00:54:13,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:13,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575138747] [2021-11-07 00:54:13,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575138747] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:13,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:13,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 17 [2021-11-07 00:54:13,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46213455] [2021-11-07 00:54:13,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 00:54:13,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:13,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 00:54:13,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-07 00:54:13,810 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 00:54:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:16,397 INFO L93 Difference]: Finished difference Result 461 states and 584 transitions. [2021-11-07 00:54:16,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 00:54:16,409 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 67 [2021-11-07 00:54:16,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:16,412 INFO L225 Difference]: With dead ends: 461 [2021-11-07 00:54:16,412 INFO L226 Difference]: Without dead ends: 374 [2021-11-07 00:54:16,413 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 00:54:16,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-07 00:54:16,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 239. [2021-11-07 00:54:16,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.2893617021276595) internal successors, (303), 238 states have internal predecessors, (303), 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 00:54:16,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2021-11-07 00:54:16,435 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 67 [2021-11-07 00:54:16,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:16,436 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2021-11-07 00:54:16,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 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 00:54:16,436 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2021-11-07 00:54:16,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 00:54:16,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:16,437 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:16,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:16,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:16,648 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 00:54:16,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:16,649 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-07 00:54:16,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:16,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675928283] [2021-11-07 00:54:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:16,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:16,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:16,651 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:16,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 00:54:17,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:17,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 00:54:17,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:18,020 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 41 treesize of output 29 [2021-11-07 00:54:18,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:54:18,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:18,367 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 00:54:18,367 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 17 treesize of output 20 [2021-11-07 00:54:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:54:18,660 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:18,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675928283] [2021-11-07 00:54:18,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675928283] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:18,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1854523705] [2021-11-07 00:54:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:18,661 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:54:18,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:54:18,665 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:54:18,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 00:54:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:19,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 00:54:19,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:20,004 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 00:54:20,004 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 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-07 00:54:24,014 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:54:24,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:25,273 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 381 treesize of output 365 [2021-11-07 00:54:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:54:25,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1854523705] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:25,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068903185] [2021-11-07 00:54:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:25,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:54:25,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:54:25,604 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:54:25,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_34e33954-b548-4b1d-9327-80bd30729a1c/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 00:54:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:26,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 00:54:26,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:26,747 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 00:54:26,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-07 00:54:44,118 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-11-07 00:54:44,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 45 [2021-11-07 00:54:44,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:54:44,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:45,132 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 349 treesize of output 333 [2021-11-07 00:54:45,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 00:54:45,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068903185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:54:45,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:54:45,354 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13, 13, 13, 13] total 48 [2021-11-07 00:54:45,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149545695] [2021-11-07 00:54:45,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 00:54:45,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:45,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 00:54:45,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2056, Unknown=4, NotChecked=0, Total=2256 [2021-11-07 00:54:45,357 INFO L87 Difference]: Start difference. First operand 239 states and 303 transitions. Second operand has 48 states, 48 states have (on average 6.041666666666667) internal successors, (290), 48 states have internal predecessors, (290), 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 00:55:52,182 WARN L207 SmtUtils]: Spent 19.10 s on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2021-11-07 00:56:13,022 WARN L207 SmtUtils]: Spent 20.40 s on a formula simplification. DAG size of input: 96 DAG size of output: 70 [2021-11-07 00:56:21,478 WARN L207 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2021-11-07 00:56:30,240 WARN L207 SmtUtils]: Spent 8.26 s on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2021-11-07 00:56:52,462 WARN L207 SmtUtils]: Spent 21.56 s on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2021-11-07 00:57:07,712 WARN L207 SmtUtils]: Spent 13.51 s on a formula simplification. DAG size of input: 100 DAG size of output: 69 [2021-11-07 00:57:18,314 WARN L207 SmtUtils]: Spent 8.20 s on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-11-07 00:57:27,244 WARN L207 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 68 DAG size of output: 47 [2021-11-07 00:57:43,387 WARN L207 SmtUtils]: Spent 12.88 s on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-11-07 00:57:54,171 WARN L207 SmtUtils]: Spent 8.24 s on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-11-07 00:58:03,365 WARN L207 SmtUtils]: Spent 8.36 s on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2021-11-07 00:58:20,775 WARN L207 SmtUtils]: Spent 14.96 s on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-11-07 00:58:46,799 WARN L207 SmtUtils]: Spent 23.41 s on a formula simplification. DAG size of input: 92 DAG size of output: 87 [2021-11-07 00:58:54,962 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 54 [2021-11-07 00:59:04,143 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 55 [2021-11-07 00:59:20,599 WARN L207 SmtUtils]: Spent 10.69 s on a formula simplification that was a NOOP. DAG size: 74 [2021-11-07 00:59:40,487 WARN L207 SmtUtils]: Spent 10.65 s on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2021-11-07 01:00:02,235 WARN L207 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 45 [2021-11-07 01:00:14,877 WARN L207 SmtUtils]: Spent 6.17 s on a formula simplification that was a NOOP. DAG size: 53 [2021-11-07 01:00:32,003 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-07 01:01:27,816 WARN L207 SmtUtils]: Spent 9.82 s on a formula simplification. DAG size of input: 93 DAG size of output: 66 [2021-11-07 01:01:54,772 WARN L207 SmtUtils]: Spent 13.75 s on a formula simplification. DAG size of input: 89 DAG size of output: 62 [2021-11-07 01:02:12,624 WARN L207 SmtUtils]: Spent 11.05 s on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2021-11-07 01:02:24,955 WARN L207 SmtUtils]: Spent 12.04 s on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-11-07 01:02:43,163 WARN L207 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2021-11-07 01:02:51,567 WARN L207 SmtUtils]: Spent 8.19 s on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2021-11-07 01:03:02,786 WARN L207 SmtUtils]: Spent 8.21 s on a formula simplification. DAG size of input: 49 DAG size of output: 39 [2021-11-07 01:03:11,451 WARN L207 SmtUtils]: Spent 8.33 s on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2021-11-07 01:03:19,423 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2021-11-07 01:04:09,649 WARN L207 SmtUtils]: Spent 7.46 s on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2021-11-07 01:04:26,842 WARN L207 SmtUtils]: Spent 12.68 s on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2021-11-07 01:04:37,478 WARN L207 SmtUtils]: Spent 8.33 s on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2021-11-07 01:05:08,565 WARN L207 SmtUtils]: Spent 15.56 s on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-11-07 01:05:26,578 WARN L207 SmtUtils]: Spent 10.56 s on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2021-11-07 01:05:41,122 WARN L207 SmtUtils]: Spent 10.03 s on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2021-11-07 01:05:46,501 WARN L207 SmtUtils]: Spent 5.22 s on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2021-11-07 01:05:55,858 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification. DAG size of input: 81 DAG size of output: 60 [2021-11-07 01:06:10,392 WARN L207 SmtUtils]: Spent 6.62 s on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2021-11-07 01:06:33,717 WARN L207 SmtUtils]: Spent 8.18 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2021-11-07 01:07:00,768 WARN L207 SmtUtils]: Spent 8.28 s on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2021-11-07 01:07:15,124 WARN L207 SmtUtils]: Spent 6.74 s on a formula simplification. DAG size of input: 67 DAG size of output: 46 [2021-11-07 01:07:26,828 WARN L207 SmtUtils]: Spent 6.89 s on a formula simplification. DAG size of input: 76 DAG size of output: 51