./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_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_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/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_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/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_45fc91a6-cfb3-44be-8e35-d520055d216d/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 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:58:37,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:58:37,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:58:37,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:58:37,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:58:37,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:58:37,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:58:37,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:58:37,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:58:37,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:58:37,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:58:37,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:58:37,556 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:58:37,559 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:58:37,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:58:37,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:58:37,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:58:37,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:58:37,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:58:37,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:58:37,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:58:37,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:58:37,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:58:37,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:58:37,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:58:37,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:58:37,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:58:37,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:58:37,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:58:37,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:58:37,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:58:37,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:58:37,592 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:58:37,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:58:37,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:58:37,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:58:37,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:58:37,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:58:37,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:58:37,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:58:37,596 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:58:37,597 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:58:37,623 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:58:37,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:58:37,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:58:37,624 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:58:37,624 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:58:37,625 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:58:37,625 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:58:37,625 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:58:37,625 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:58:37,625 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:58:37,625 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:58:37,625 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:58:37,626 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:58:37,626 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:58:37,626 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:58:37,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:58:37,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:58:37,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:58:37,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:58:37,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:58:37,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:58:37,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:58:37,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:58:37,628 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:58:37,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:58:37,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:58:37,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:58:37,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:58:37,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:58:37,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:58:37,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:58:37,630 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:58:37,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:58:37,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:58:37,631 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:58:37,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:58:37,631 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_45fc91a6-cfb3-44be-8e35-d520055d216d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e [2021-11-07 00:58:37,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:58:37,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:58:37,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:58:37,873 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:58:37,874 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:58:37,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-07 00:58:37,950 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data/4ae298581/2bd08d4ae59d4a3c93e1a141bfcec54d/FLAGd74131f46 [2021-11-07 00:58:38,756 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:58:38,757 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-07 00:58:38,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data/4ae298581/2bd08d4ae59d4a3c93e1a141bfcec54d/FLAGd74131f46 [2021-11-07 00:58:39,286 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data/4ae298581/2bd08d4ae59d4a3c93e1a141bfcec54d [2021-11-07 00:58:39,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:58:39,290 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:58:39,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:58:39,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:58:39,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:58:39,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:39" (1/1) ... [2021-11-07 00:58:39,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@447288b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:39, skipping insertion in model container [2021-11-07 00:58:39,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:39" (1/1) ... [2021-11-07 00:58:39,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:58:39,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:58:39,727 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_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-07 00:58:39,737 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_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-07 00:58:39,762 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 00:58:39,774 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 00:58:40,590 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,591 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,591 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,592 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,593 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,608 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,609 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,615 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,616 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:40,617 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:41,036 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 00:58:41,041 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 00:58:41,044 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 00:58:41,045 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 00:58:41,046 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 00:58:41,047 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 00:58:41,048 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 00:58:41,049 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 00:58:41,051 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 00:58:41,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 00:58:41,252 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 00:58:41,289 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:58:41,314 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 00:58:41,315 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58e2a031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:41, skipping insertion in model container [2021-11-07 00:58:41,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:58:41,316 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:58:41,318 INFO L168 Benchmark]: Toolchain (without parser) took 2026.44 ms. Allocated memory is still 130.0 MB. Free memory was 88.5 MB in the beginning and 72.5 MB in the end (delta: 16.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-11-07 00:58:41,319 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory was 41.5 MB in the beginning and 41.4 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:58:41,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2023.69 ms. Allocated memory is still 130.0 MB. Free memory was 88.1 MB in the beginning and 72.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-07 00:58:41,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 88.1 MB. Free memory was 41.5 MB in the beginning and 41.4 MB in the end (delta: 40.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2023.69 ms. Allocated memory is still 130.0 MB. Free memory was 88.1 MB in the beginning and 72.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7039]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/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_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/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_45fc91a6-cfb3-44be-8e35-d520055d216d/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 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:58:43,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:58:43,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:58:43,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:58:43,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:58:43,644 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:58:43,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:58:43,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:58:43,650 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:58:43,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:58:43,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:58:43,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:58:43,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:58:43,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:58:43,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:58:43,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:58:43,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:58:43,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:58:43,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:58:43,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:58:43,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:58:43,678 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:58:43,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:58:43,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:58:43,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:58:43,696 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:58:43,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:58:43,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:58:43,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:58:43,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:58:43,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:58:43,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:58:43,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:58:43,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:58:43,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:58:43,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:58:43,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:58:43,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:58:43,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:58:43,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:58:43,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:58:43,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:58:43,764 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:58:43,764 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:58:43,765 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:58:43,766 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:58:43,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:58:43,766 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:58:43,766 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:58:43,766 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:58:43,767 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:58:43,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:58:43,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:58:43,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:58:43,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:58:43,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:58:43,770 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:58:43,770 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:58:43,771 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:58:43,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:58:43,771 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:58:43,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:58:43,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:58:43,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:58:43,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:58:43,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:58:43,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:58:43,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:58:43,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:58:43,773 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:58:43,773 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:43,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:58:43,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:58:43,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:58:43,774 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_45fc91a6-cfb3-44be-8e35-d520055d216d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5bb1e95e9d6379d31cbb3e207d6fe85ddf495edebf9b764e927537f63dbf829e [2021-11-07 00:58:44,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:58:44,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:58:44,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:58:44,190 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:58:44,190 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:58:44,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-07 00:58:44,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data/238518bf0/1c2791f9edf04fcf92dd81fc748a5716/FLAG027590e86 [2021-11-07 00:58:45,046 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:58:45,047 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i [2021-11-07 00:58:45,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data/238518bf0/1c2791f9edf04fcf92dd81fc748a5716/FLAG027590e86 [2021-11-07 00:58:45,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/data/238518bf0/1c2791f9edf04fcf92dd81fc748a5716 [2021-11-07 00:58:45,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:58:45,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:58:45,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:58:45,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:58:45,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:58:45,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:45" (1/1) ... [2021-11-07 00:58:45,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76ea7887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:45, skipping insertion in model container [2021-11-07 00:58:45,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:58:45" (1/1) ... [2021-11-07 00:58:45,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:58:45,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:58:45,569 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_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-07 00:58:45,576 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_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-07 00:58:45,599 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 00:58:45,611 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 00:58:46,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,476 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,491 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,493 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,501 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,504 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,507 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,507 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:46,881 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 00:58:46,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 00:58:46,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 00:58:46,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 00:58:46,885 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 00:58:46,886 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 00:58:46,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 00:58:46,887 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 00:58:46,888 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 00:58:46,889 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 00:58:47,080 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 00:58:47,129 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:58:47,165 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:58:47,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:58:47,220 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_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-07 00:58:47,221 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_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-07 00:58:47,225 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 00:58:47,231 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 00:58:47,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,291 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,303 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,313 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,319 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,320 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,321 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,322 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,323 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,324 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,394 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 00:58:47,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 00:58:47,399 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 00:58:47,400 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 00:58:47,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 00:58:47,407 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 00:58:47,408 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 00:58:47,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 00:58:47,409 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 00:58:47,410 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 00:58:47,441 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 00:58:47,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:58:47,474 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:58:47,497 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_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4494,4507] [2021-11-07 00:58:47,503 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_45fc91a6-cfb3-44be-8e35-d520055d216d/sv-benchmarks/c/aws-c-common/aws_linked_list_next_harness.i[4554,4567] [2021-11-07 00:58:47,505 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 00:58:47,506 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 00:58:47,554 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,555 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,556 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,557 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,568 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,569 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,570 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,571 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,572 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 00:58:47,608 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 00:58:47,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 00:58:47,609 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 00:58:47,610 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 00:58:47,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 00:58:47,611 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 00:58:47,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 00:58:47,612 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 00:58:47,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 00:58:47,613 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 00:58:47,677 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 00:58:47,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:58:47,961 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:58:47,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47 WrapperNode [2021-11-07 00:58:47,961 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:58:47,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:58:47,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:58:47,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:58:47,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:58:48,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:58:48,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:58:48,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:58:48,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:58:48,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:58:48,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:58:48,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:58:48,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (1/1) ... [2021-11-07 00:58:48,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:58:48,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:58:48,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:58:48,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:58:48,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:58:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:58:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:58:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:58:48,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:58:48,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:58:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:58:48,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:58:48,844 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:58:48,844 INFO L299 CfgBuilder]: Removed 32 assume(true) statements. [2021-11-07 00:58:48,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:58:48 BoogieIcfgContainer [2021-11-07 00:58:48,846 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:58:48,848 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:58:48,848 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:58:48,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:58:48,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:58:45" (1/3) ... [2021-11-07 00:58:48,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b3ff25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:58:48, skipping insertion in model container [2021-11-07 00:58:48,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:58:47" (2/3) ... [2021-11-07 00:58:48,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b3ff25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:58:48, skipping insertion in model container [2021-11-07 00:58:48,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:58:48" (3/3) ... [2021-11-07 00:58:48,854 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_next_harness.i [2021-11-07 00:58:48,859 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:58:48,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 00:58:48,907 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:58:48,913 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 00:58:48,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 00:58:48,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 57 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:58:48,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:48,933 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:58:48,933 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:58:48,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:48,939 INFO L85 PathProgramCache]: Analyzing trace with hash -126002633, now seen corresponding path program 1 times [2021-11-07 00:58:48,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:48,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005721363] [2021-11-07 00:58:48,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:48,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:48,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:48,957 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:48,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:58:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:49,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:58:49,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:49,219 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 00:58:49,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:49,262 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 00:58:49,263 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:49,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005721363] [2021-11-07 00:58:49,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005721363] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:49,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:49,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:58:49,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385922248] [2021-11-07 00:58:49,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:58:49,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:49,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:58:49,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:58:49,285 INFO L87 Difference]: Start difference. First operand has 58 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 57 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 00:58:49,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:49,304 INFO L93 Difference]: Finished difference Result 108 states and 137 transitions. [2021-11-07 00:58:49,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:58:49,305 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2021-11-07 00:58:49,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:49,314 INFO L225 Difference]: With dead ends: 108 [2021-11-07 00:58:49,314 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 00:58:49,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 00:58:49,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 00:58:49,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-11-07 00:58:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 52 states have internal predecessors, (62), 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 00:58:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-11-07 00:58:49,351 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 16 [2021-11-07 00:58:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:49,351 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-11-07 00:58:49,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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 00:58:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-11-07 00:58:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 00:58:49,353 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:49,353 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:58:49,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:49,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:58:49,568 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:58:49,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:49,569 INFO L85 PathProgramCache]: Analyzing trace with hash 554055737, now seen corresponding path program 1 times [2021-11-07 00:58:49,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:49,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121376052] [2021-11-07 00:58:49,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:58:49,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:49,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:49,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:49,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:58:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:49,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 00:58:49,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:50,859 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 00:58:50,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:53,647 INFO L354 Elim1Store]: treesize reduction 25, result has 75.7 percent of original size [2021-11-07 00:58:53,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 121 [2021-11-07 00:58:54,071 INFO L354 Elim1Store]: treesize reduction 15, result has 77.6 percent of original size [2021-11-07 00:58:54,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 109 treesize of output 132 [2021-11-07 00:58:55,624 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 00:58:55,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:55,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121376052] [2021-11-07 00:58:55,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121376052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:55,624 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:55,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-07 00:58:55,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335279198] [2021-11-07 00:58:55,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 00:58:55,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:55,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 00:58:55,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-07 00:58:55,627 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 00:59:10,253 WARN L207 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2021-11-07 00:59:52,177 WARN L207 SmtUtils]: Spent 33.07 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-11-07 01:00:19,417 WARN L207 SmtUtils]: Spent 16.31 s on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2021-11-07 01:00:21,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:21,891 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2021-11-07 01:00:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:00:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 16 [2021-11-07 01:00:21,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:21,894 INFO L225 Difference]: With dead ends: 139 [2021-11-07 01:00:21,894 INFO L226 Difference]: Without dead ends: 137 [2021-11-07 01:00:21,896 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 80.4s TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:00:21,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-07 01:00:21,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 56. [2021-11-07 01:00:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 50 states have (on average 1.3) internal successors, (65), 55 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 01:00:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2021-11-07 01:00:21,907 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 16 [2021-11-07 01:00:21,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:21,907 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2021-11-07 01:00:21,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.4375) internal successors, (23), 16 states have internal predecessors, (23), 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 01:00:21,908 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2021-11-07 01:00:21,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:00:21,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:21,909 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:21,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:22,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:22,118 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:00:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:22,118 INFO L85 PathProgramCache]: Analyzing trace with hash 555902779, now seen corresponding path program 1 times [2021-11-07 01:00:22,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:22,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964878839] [2021-11-07 01:00:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:22,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:22,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:22,123 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:22,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:00:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:22,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:00:22,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:22,662 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 35 treesize of output 27 [2021-11-07 01:00:22,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-07 01:00:22,724 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 01:00:22,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:22,926 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-07 01:00:22,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-07 01:00:22,935 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-07 01:00:22,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-07 01:00:22,954 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 01:00:22,954 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:22,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964878839] [2021-11-07 01:00:22,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964878839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:22,954 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:22,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-11-07 01:00:22,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85494807] [2021-11-07 01:00:22,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:00:22,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:00:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:00:22,956 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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 01:00:23,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:23,438 INFO L93 Difference]: Finished difference Result 112 states and 130 transitions. [2021-11-07 01:00:23,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:00:23,439 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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 16 [2021-11-07 01:00:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:23,440 INFO L225 Difference]: With dead ends: 112 [2021-11-07 01:00:23,440 INFO L226 Difference]: Without dead ends: 59 [2021-11-07 01:00:23,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:00:23,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-07 01:00:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-11-07 01:00:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 52 states have (on average 1.25) internal successors, (65), 57 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 01:00:23,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2021-11-07 01:00:23,449 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 16 [2021-11-07 01:00:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:23,449 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2021-11-07 01:00:23,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 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 01:00:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2021-11-07 01:00:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:00:23,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:23,451 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:23,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:00:23,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:23,666 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:00:23,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:23,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1964057155, now seen corresponding path program 1 times [2021-11-07 01:00:23,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:23,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303348300] [2021-11-07 01:00:23,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:23,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:23,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:23,668 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:23,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:00:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:23,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:00:23,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:23,905 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 01:00:23,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:23,962 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 01:00:23,963 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:23,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303348300] [2021-11-07 01:00:23,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303348300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:23,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:23,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:00:23,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559799668] [2021-11-07 01:00:23,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:00:23,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:23,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:00:23,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:23,965 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 01:00:24,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:24,017 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2021-11-07 01:00:24,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:00:24,017 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2021-11-07 01:00:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:24,018 INFO L225 Difference]: With dead ends: 97 [2021-11-07 01:00:24,018 INFO L226 Difference]: Without dead ends: 51 [2021-11-07 01:00:24,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 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 01:00:24,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-07 01:00:24,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-11-07 01:00:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 50 states have internal predecessors, (56), 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 01:00:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2021-11-07 01:00:24,032 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 16 [2021-11-07 01:00:24,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:24,032 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2021-11-07 01:00:24,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 01:00:24,033 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2021-11-07 01:00:24,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:00:24,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:24,034 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] [2021-11-07 01:00:24,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:24,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:00:24,235 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:00:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash -536904639, now seen corresponding path program 1 times [2021-11-07 01:00:24,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:00:24,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867494637] [2021-11-07 01:00:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:24,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:00:24,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:00:24,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:00:24,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:00:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:24,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 01:00:24,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:25,829 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-07 01:00:25,830 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 96 [2021-11-07 01:00:25,894 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-07 01:00:25,895 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2021-11-07 01:00:26,120 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 01:00:26,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:44,206 WARN L207 SmtUtils]: Spent 8.76 s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-07 01:00:44,207 INFO L354 Elim1Store]: treesize reduction 25, result has 84.3 percent of original size [2021-11-07 01:00:44,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 203 [2021-11-07 01:00:45,062 INFO L354 Elim1Store]: treesize reduction 23, result has 79.3 percent of original size [2021-11-07 01:00:45,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 213 treesize of output 220 [2021-11-07 01:00:49,679 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 01:00:49,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:00:49,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867494637] [2021-11-07 01:00:49,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867494637] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:49,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:49,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 20 [2021-11-07 01:00:49,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581798919] [2021-11-07 01:00:49,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:00:49,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:00:49,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:00:49,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=327, Unknown=4, NotChecked=0, Total=380 [2021-11-07 01:00:49,682 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 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 01:01:05,506 WARN L207 SmtUtils]: Spent 12.36 s on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-11-07 01:01:20,149 WARN L207 SmtUtils]: Spent 12.29 s on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-11-07 01:01:44,859 WARN L207 SmtUtils]: Spent 24.60 s on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-11-07 01:02:09,661 WARN L207 SmtUtils]: Spent 24.64 s on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2021-11-07 01:06:10,066 WARN L207 SmtUtils]: Spent 12.33 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2021-11-07 01:06:51,657 WARN L207 SmtUtils]: Spent 12.28 s on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2021-11-07 01:07:04,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:04,055 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2021-11-07 01:07:04,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:07:04,074 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 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 23 [2021-11-07 01:07:04,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:04,075 INFO L225 Difference]: With dead ends: 80 [2021-11-07 01:07:04,075 INFO L226 Difference]: Without dead ends: 78 [2021-11-07 01:07:04,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 211.0s TimeCoverageRelationStatistics Valid=385, Invalid=1213, Unknown=42, NotChecked=0, Total=1640 [2021-11-07 01:07:04,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-07 01:07:04,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 54. [2021-11-07 01:07:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 53 states have internal predecessors, (59), 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 01:07:04,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-11-07 01:07:04,085 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 23 [2021-11-07 01:07:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-11-07 01:07:04,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.05) internal successors, (41), 20 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 01:07:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-11-07 01:07:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:07:04,087 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:04,087 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] [2021-11-07 01:07:04,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:04,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:04,296 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:07:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash -535057597, now seen corresponding path program 1 times [2021-11-07 01:07:04,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:04,297 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387413951] [2021-11-07 01:07:04,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:04,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:04,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:04,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:04,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:07:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:04,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 01:07:04,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:04,987 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 36 treesize of output 28 [2021-11-07 01:07:05,564 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-11-07 01:07:05,564 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 32 [2021-11-07 01:07:05,723 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 01:07:05,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:06,741 INFO L354 Elim1Store]: treesize reduction 21, result has 79.6 percent of original size [2021-11-07 01:07:06,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 98 [2021-11-07 01:07:06,773 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:07:06,774 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 82 treesize of output 73 [2021-11-07 01:07:07,215 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 01:07:07,215 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:07,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387413951] [2021-11-07 01:07:07,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387413951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:07,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:07,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 17 [2021-11-07 01:07:07,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209927901] [2021-11-07 01:07:07,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 01:07:07,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:07,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 01:07:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:07:07,218 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 01:07:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:10,772 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2021-11-07 01:07:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:07:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 23 [2021-11-07 01:07:10,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:10,775 INFO L225 Difference]: With dead ends: 89 [2021-11-07 01:07:10,775 INFO L226 Difference]: Without dead ends: 57 [2021-11-07 01:07:10,777 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:07:10,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-07 01:07:10,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2021-11-07 01:07:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.196078431372549) internal successors, (61), 55 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 01:07:10,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2021-11-07 01:07:10,787 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 23 [2021-11-07 01:07:10,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:10,787 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2021-11-07 01:07:10,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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 01:07:10,788 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2021-11-07 01:07:10,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 01:07:10,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:10,789 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] [2021-11-07 01:07:10,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-07 01:07:10,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:10,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:07:10,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:10,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1239949765, now seen corresponding path program 1 times [2021-11-07 01:07:10,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:10,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237878224] [2021-11-07 01:07:10,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:10,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:10,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:10,999 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:11,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:07:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:11,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:07:11,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:11,600 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 01:07:11,604 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 01:07:11,725 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 01:07:11,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:11,981 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-07 01:07:11,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-07 01:07:11,989 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-07 01:07:11,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-07 01:07:12,002 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 01:07:12,002 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:12,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237878224] [2021-11-07 01:07:12,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237878224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:12,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:12,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 10 [2021-11-07 01:07:12,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422077040] [2021-11-07 01:07:12,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:07:12,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:12,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:07:12,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:07:12,004 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 01:07:12,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:12,920 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-11-07 01:07:12,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:07:12,921 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 23 [2021-11-07 01:07:12,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:12,922 INFO L225 Difference]: With dead ends: 86 [2021-11-07 01:07:12,922 INFO L226 Difference]: Without dead ends: 49 [2021-11-07 01:07:12,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:07:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-07 01:07:12,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-07 01:07:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 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 01:07:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2021-11-07 01:07:12,930 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 23 [2021-11-07 01:07:12,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:12,930 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2021-11-07 01:07:12,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 01:07:12,930 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2021-11-07 01:07:12,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 01:07:12,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:12,932 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] [2021-11-07 01:07:12,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:13,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:13,132 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:07:13,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:13,133 INFO L85 PathProgramCache]: Analyzing trace with hash -569156093, now seen corresponding path program 1 times [2021-11-07 01:07:13,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:13,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [454882039] [2021-11-07 01:07:13,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:13,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:13,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:13,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:13,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:07:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:13,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:07:13,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:13,668 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 01:07:13,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:13,844 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 01:07:13,844 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:13,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [454882039] [2021-11-07 01:07:13,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [454882039] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:13,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:13,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 01:07:13,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98573245] [2021-11-07 01:07:13,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:07:13,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:13,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:07:13,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:07:13,845 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 01:07:14,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:14,012 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-11-07 01:07:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:07:14,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 25 [2021-11-07 01:07:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:14,014 INFO L225 Difference]: With dead ends: 49 [2021-11-07 01:07:14,015 INFO L226 Difference]: Without dead ends: 47 [2021-11-07 01:07:14,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:07:14,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-07 01:07:14,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-07 01:07:14,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 44 states have (on average 1.1363636363636365) internal successors, (50), 46 states have internal predecessors, (50), 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 01:07:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions. [2021-11-07 01:07:14,022 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 25 [2021-11-07 01:07:14,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:14,022 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 50 transitions. [2021-11-07 01:07:14,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 01:07:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions. [2021-11-07 01:07:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:07:14,024 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:14,024 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] [2021-11-07 01:07:14,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:14,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:14,234 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:07:14,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1661416883, now seen corresponding path program 1 times [2021-11-07 01:07:14,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:14,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827444659] [2021-11-07 01:07:14,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:14,235 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:14,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:14,236 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:14,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:07:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:14,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 01:07:14,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:15,694 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 01:07:15,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:20,906 INFO L354 Elim1Store]: treesize reduction 21, result has 79.6 percent of original size [2021-11-07 01:07:20,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 125 [2021-11-07 01:07:21,485 INFO L354 Elim1Store]: treesize reduction 8, result has 88.1 percent of original size [2021-11-07 01:07:21,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 113 treesize of output 143 [2021-11-07 01:07:23,261 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 01:07:23,262 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:23,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827444659] [2021-11-07 01:07:23,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827444659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:23,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:23,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 16 [2021-11-07 01:07:23,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250134855] [2021-11-07 01:07:23,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 01:07:23,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:23,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 01:07:23,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:07:23,264 INFO L87 Difference]: Start difference. First operand 47 states and 50 transitions. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 01:07:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:55,424 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2021-11-07 01:07:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:07:55,425 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 33 [2021-11-07 01:07:55,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:55,426 INFO L225 Difference]: With dead ends: 65 [2021-11-07 01:07:55,426 INFO L226 Difference]: Without dead ends: 63 [2021-11-07 01:07:55,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:07:55,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-07 01:07:55,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 50. [2021-11-07 01:07:55,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 47 states have (on average 1.127659574468085) internal successors, (53), 49 states have internal predecessors, (53), 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 01:07:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2021-11-07 01:07:55,436 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 33 [2021-11-07 01:07:55,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:55,436 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2021-11-07 01:07:55,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 16 states have internal predecessors, (40), 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 01:07:55,436 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2021-11-07 01:07:55,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:07:55,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:55,438 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] [2021-11-07 01:07:55,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:55,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:55,654 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:07:55,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:55,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1659569841, now seen corresponding path program 1 times [2021-11-07 01:07:55,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:55,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99656460] [2021-11-07 01:07:55,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:55,655 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:55,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:55,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:55,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 01:07:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:56,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:07:56,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:56,681 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 35 treesize of output 27 [2021-11-07 01:07:56,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2021-11-07 01:07:56,771 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 01:07:56,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:57,273 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-11-07 01:07:57,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 31 [2021-11-07 01:07:57,287 INFO L354 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2021-11-07 01:07:57,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2021-11-07 01:07:57,305 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 01:07:57,306 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:57,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99656460] [2021-11-07 01:07:57,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99656460] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:57,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:57,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 11 [2021-11-07 01:07:57,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686482669] [2021-11-07 01:07:57,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:07:57,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:57,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:07:57,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:07:57,308 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 01:07:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:57,931 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2021-11-07 01:07:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:07:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 33 [2021-11-07 01:07:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:57,933 INFO L225 Difference]: With dead ends: 71 [2021-11-07 01:07:57,933 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 01:07:57,933 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:07:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 01:07:57,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-11-07 01:07:57,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 51 states have internal predecessors, (55), 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 01:07:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-11-07 01:07:57,942 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 33 [2021-11-07 01:07:57,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:57,942 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-11-07 01:07:57,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 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 01:07:57,943 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-11-07 01:07:57,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-07 01:07:57,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:57,944 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] [2021-11-07 01:07:57,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:58,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:58,163 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:07:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:58,163 INFO L85 PathProgramCache]: Analyzing trace with hash 115437521, now seen corresponding path program 1 times [2021-11-07 01:07:58,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:58,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952288004] [2021-11-07 01:07:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:58,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:58,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:58,165 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:58,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:07:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:58,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:07:58,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:58,707 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 01:07:58,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:58,859 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 01:07:58,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:58,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952288004] [2021-11-07 01:07:58,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952288004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:07:58,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:07:58,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:07:58,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222467717] [2021-11-07 01:07:58,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:07:58,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:07:58,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:07:58,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:07:58,862 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 01:07:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:58,926 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-11-07 01:07:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:07:58,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2021-11-07 01:07:58,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:58,927 INFO L225 Difference]: With dead ends: 68 [2021-11-07 01:07:58,927 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 01:07:58,928 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 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 01:07:58,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 01:07:58,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-11-07 01:07:58,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.069767441860465) internal successors, (46), 44 states have internal predecessors, (46), 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 01:07:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-11-07 01:07:58,935 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 33 [2021-11-07 01:07:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:58,935 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-11-07 01:07:58,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 01:07:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-11-07 01:07:58,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 01:07:58,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:58,937 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] [2021-11-07 01:07:58,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:07:59,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:07:59,154 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 01:07:59,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash -9950966, now seen corresponding path program 1 times [2021-11-07 01:07:59,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:07:59,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281237247] [2021-11-07 01:07:59,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:59,155 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:07:59,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:07:59,156 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:07:59,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45fc91a6-cfb3-44be-8e35-d520055d216d/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:07:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:59,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 01:07:59,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:02,475 INFO L354 Elim1Store]: treesize reduction 46, result has 6.1 percent of original size [2021-11-07 01:08:02,475 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 6 new quantified variables, introduced 3 case distinctions, treesize of input 200 treesize of output 96 [2021-11-07 01:08:02,535 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-11-07 01:08:02,535 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 5 new quantified variables, introduced 3 case distinctions, treesize of input 63 treesize of output 37 [2021-11-07 01:08:02,857 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 01:08:02,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:30,536 WARN L207 SmtUtils]: Spent 8.93 s on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-11-07 01:08:30,536 INFO L354 Elim1Store]: treesize reduction 25, result has 84.3 percent of original size [2021-11-07 01:08:30,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 116 treesize of output 203 [2021-11-07 01:08:31,681 INFO L354 Elim1Store]: treesize reduction 23, result has 79.3 percent of original size [2021-11-07 01:08:31,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 213 treesize of output 220 [2021-11-07 01:08:44,560 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 01:08:44,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:44,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281237247] [2021-11-07 01:08:44,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281237247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:44,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:44,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 24 [2021-11-07 01:08:44,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531902437] [2021-11-07 01:08:44,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 01:08:44,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:44,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 01:08:44,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=487, Unknown=8, NotChecked=0, Total=552 [2021-11-07 01:08:44,563 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 24 states, 24 states have (on average 3.125) internal successors, (75), 24 states have internal predecessors, (75), 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 01:08:59,859 WARN L207 SmtUtils]: Spent 12.30 s on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2021-11-07 01:09:15,201 WARN L207 SmtUtils]: Spent 12.30 s on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2021-11-07 01:09:32,222 WARN L207 SmtUtils]: Spent 12.44 s on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2021-11-07 01:09:53,647 WARN L207 SmtUtils]: Spent 12.52 s on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2021-11-07 01:10:10,820 WARN L207 SmtUtils]: Spent 12.60 s on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-11-07 01:10:27,833 WARN L207 SmtUtils]: Spent 12.43 s on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2021-11-07 01:10:47,185 WARN L207 SmtUtils]: Spent 12.46 s on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2021-11-07 01:11:18,453 WARN L207 SmtUtils]: Spent 24.74 s on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2021-11-07 01:11:43,526 WARN L207 SmtUtils]: Spent 12.84 s on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2021-11-07 01:12:32,802 WARN L207 SmtUtils]: Spent 12.72 s on a formula simplification. DAG size of input: 86 DAG size of output: 78