./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_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_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/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_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/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_03b810f5-61d1-4d60-b818-d1122dde561a/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 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:08:09,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:08:09,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:08:09,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:08:09,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:08:09,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:08:09,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:08:09,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:08:09,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:08:09,524 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:08:09,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:08:09,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:08:09,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:08:09,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:08:09,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:08:09,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:08:09,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:08:09,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:08:09,539 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:08:09,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:08:09,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:08:09,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:08:09,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:08:09,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:08:09,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:08:09,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:08:09,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:08:09,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:08:09,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:08:09,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:08:09,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:08:09,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:08:09,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:08:09,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:08:09,574 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:08:09,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:08:09,575 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:08:09,576 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:08:09,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:08:09,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:08:09,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:08:09,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 01:08:09,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:08:09,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:08:09,628 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:08:09,628 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:08:09,628 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:08:09,629 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:08:09,629 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:08:09,629 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:08:09,635 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:08:09,636 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:08:09,637 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:08:09,637 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:08:09,637 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:08:09,638 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:08:09,638 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:08:09,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:08:09,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:08:09,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:08:09,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:08:09,640 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:08:09,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:08:09,640 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:08:09,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:08:09,641 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:08:09,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:08:09,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:08:09,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:08:09,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:09,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:08:09,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:08:09,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:08:09,644 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:08:09,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:08:09,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:08:09,645 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:08:09,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:08:09,645 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_03b810f5-61d1-4d60-b818-d1122dde561a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 [2021-11-07 01:08:09,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:08:09,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:08:09,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:08:09,958 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:08:09,959 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:08:09,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2021-11-07 01:08:10,043 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data/ca8e9aeaa/3ef0c1bb50094c8b985b2dac0a217d00/FLAG1429e7459 [2021-11-07 01:08:10,884 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:08:10,884 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2021-11-07 01:08:10,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data/ca8e9aeaa/3ef0c1bb50094c8b985b2dac0a217d00/FLAG1429e7459 [2021-11-07 01:08:10,965 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data/ca8e9aeaa/3ef0c1bb50094c8b985b2dac0a217d00 [2021-11-07 01:08:10,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:08:10,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:08:10,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:10,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:08:10,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:08:10,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:10" (1/1) ... [2021-11-07 01:08:10,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb8032b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:10, skipping insertion in model container [2021-11-07 01:08:10,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:10" (1/1) ... [2021-11-07 01:08:10,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:08:11,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:11,355 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_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2021-11-07 01:08:11,361 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_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2021-11-07 01:08:11,381 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:08:11,387 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:08:12,295 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,304 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,305 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,306 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,308 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,326 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,330 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,336 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,339 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,342 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,344 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,345 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,346 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:12,766 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:08:12,770 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:08:12,773 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:08:12,774 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:08:12,776 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:08:12,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:08:12,777 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:08:12,778 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:08:12,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:08:12,781 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:08:12,925 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:08:12,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:12,961 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 01:08:12,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e07671f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:12, skipping insertion in model container [2021-11-07 01:08:12,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:12,962 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:08:12,964 INFO L168 Benchmark]: Toolchain (without parser) took 1995.08 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.4 MB in the beginning and 64.0 MB in the end (delta: -5.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:12,965 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:08:12,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1992.77 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.1 MB in the beginning and 64.0 MB in the end (delta: -5.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:08:12,967 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 98.6 MB. Free memory is still 51.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1992.77 ms. Allocated memory was 98.6 MB in the beginning and 119.5 MB in the end (delta: 21.0 MB). Free memory was 58.1 MB in the beginning and 64.0 MB in the end (delta: -5.9 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: 7037]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/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_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/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_03b810f5-61d1-4d60-b818-d1122dde561a/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 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:08:15,128 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:08:15,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:08:15,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:08:15,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:08:15,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:08:15,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:08:15,203 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:08:15,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:08:15,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:08:15,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:08:15,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:08:15,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:08:15,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:08:15,224 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:08:15,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:08:15,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:08:15,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:08:15,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:08:15,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:08:15,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:08:15,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:08:15,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:08:15,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:08:15,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:08:15,254 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:08:15,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:08:15,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:08:15,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:08:15,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:08:15,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:08:15,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:08:15,262 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:08:15,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:08:15,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:08:15,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:08:15,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:08:15,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:08:15,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:08:15,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:08:15,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:08:15,269 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 01:08:15,313 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:08:15,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:08:15,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:08:15,315 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:08:15,315 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:08:15,315 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:08:15,315 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:08:15,316 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:08:15,317 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:08:15,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:08:15,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:08:15,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:08:15,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:08:15,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:08:15,320 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:08:15,320 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:08:15,320 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:08:15,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:08:15,321 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:08:15,321 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:08:15,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:08:15,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:08:15,322 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:08:15,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:15,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:08:15,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:08:15,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:08:15,323 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:08:15,323 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:15,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:08:15,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:08:15,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:08:15,324 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_03b810f5-61d1-4d60-b818-d1122dde561a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3bef4637cc296c755ba815d09f028f51f0bde7e0d2e6155f2b5c648b5201a193 [2021-11-07 01:08:15,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:08:15,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:08:15,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:08:15,761 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:08:15,762 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:08:15,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2021-11-07 01:08:15,827 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data/7a0f1d7ad/53ec3cb09fd84971a386df62f75a1994/FLAGd52ae9373 [2021-11-07 01:08:16,733 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:08:16,733 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i [2021-11-07 01:08:16,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data/7a0f1d7ad/53ec3cb09fd84971a386df62f75a1994/FLAGd52ae9373 [2021-11-07 01:08:17,243 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/data/7a0f1d7ad/53ec3cb09fd84971a386df62f75a1994 [2021-11-07 01:08:17,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:08:17,246 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:08:17,248 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:17,248 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:08:17,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:08:17,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:17" (1/1) ... [2021-11-07 01:08:17,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6561544c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:17, skipping insertion in model container [2021-11-07 01:08:17,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:17" (1/1) ... [2021-11-07 01:08:17,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:08:17,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:17,696 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_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2021-11-07 01:08:17,702 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_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2021-11-07 01:08:17,723 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:08:17,728 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:08:18,573 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,574 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,574 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,575 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,576 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,591 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,596 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,604 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,605 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,607 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,612 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,613 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:18,970 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:08:18,971 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:08:18,973 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:08:18,974 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:08:18,976 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:08:18,976 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:08:18,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:08:18,978 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:08:18,978 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:08:18,979 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:08:19,119 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:08:19,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:19,165 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:08:19,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:08:19,204 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_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2021-11-07 01:08:19,205 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_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2021-11-07 01:08:19,206 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:08:19,207 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:08:19,249 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,250 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,251 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,252 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,261 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,263 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,265 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,266 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,266 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,312 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:08:19,313 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:08:19,314 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:08:19,315 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:08:19,316 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:08:19,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:08:19,317 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:08:19,318 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:08:19,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:08:19,319 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:08:19,349 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:08:19,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:19,392 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:08:19,430 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_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4496,4509] [2021-11-07 01:08:19,436 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_03b810f5-61d1-4d60-b818-d1122dde561a/sv-benchmarks/c/aws-c-common/aws_linked_list_rbegin_harness.i[4556,4569] [2021-11-07 01:08:19,438 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-07 01:08:19,450 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-07 01:08:19,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,487 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,489 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,495 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,496 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,497 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,498 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-07 01:08:19,530 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-07 01:08:19,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-07 01:08:19,531 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-07 01:08:19,532 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-07 01:08:19,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-07 01:08:19,533 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-07 01:08:19,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-07 01:08:19,534 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-07 01:08:19,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-07 01:08:19,535 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-07 01:08:19,555 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-07 01:08:19,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:08:19,847 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:08:19,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19 WrapperNode [2021-11-07 01:08:19,847 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:08:19,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:08:19,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:08:19,850 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:08:19,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:19,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:08:20,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:08:20,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:08:20,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:08:20,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:08:20,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:08:20,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:08:20,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:08:20,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (1/1) ... [2021-11-07 01:08:20,183 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:08:20,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:08:20,209 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:08:20,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:08:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 01:08:20,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:08:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 01:08:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 01:08:20,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:08:20,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:08:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:08:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 01:08:20,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 01:08:21,108 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:08:21,109 INFO L299 CfgBuilder]: Removed 55 assume(true) statements. [2021-11-07 01:08:21,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:21 BoogieIcfgContainer [2021-11-07 01:08:21,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:08:21,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:08:21,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:08:21,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:08:21,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:08:17" (1/3) ... [2021-11-07 01:08:21,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780fc10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:21, skipping insertion in model container [2021-11-07 01:08:21,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:19" (2/3) ... [2021-11-07 01:08:21,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@780fc10e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:21, skipping insertion in model container [2021-11-07 01:08:21,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:21" (3/3) ... [2021-11-07 01:08:21,118 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_linked_list_rbegin_harness.i [2021-11-07 01:08:21,123 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:08:21,123 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 01:08:21,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:08:21,202 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 01:08:21,203 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 01:08:21,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:08:21,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:21,233 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:21,233 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:21,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:21,245 INFO L85 PathProgramCache]: Analyzing trace with hash -122732205, now seen corresponding path program 1 times [2021-11-07 01:08:21,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:21,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [195004078] [2021-11-07 01:08:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:21,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:21,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:21,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:21,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:08:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:21,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:08:21,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:21,708 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 01:08:21,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:21,828 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 01:08:21,829 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:21,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [195004078] [2021-11-07 01:08:21,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [195004078] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:21,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:21,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:08:21,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908605147] [2021-11-07 01:08:21,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:08:21,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:21,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:08:21,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:08:21,854 INFO L87 Difference]: Start difference. First operand has 114 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 113 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:21,895 INFO L93 Difference]: Finished difference Result 224 states and 335 transitions. [2021-11-07 01:08:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:08:21,897 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:08:21,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:21,908 INFO L225 Difference]: With dead ends: 224 [2021-11-07 01:08:21,909 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:08:21,912 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:08:21,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:08:21,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 01:08:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.457142857142857) internal successors, (153), 108 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 153 transitions. [2021-11-07 01:08:21,962 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 153 transitions. Word has length 41 [2021-11-07 01:08:21,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:21,962 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 153 transitions. [2021-11-07 01:08:21,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 153 transitions. [2021-11-07 01:08:21,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:08:21,967 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:21,967 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:21,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:22,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:22,183 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1738897517, now seen corresponding path program 1 times [2021-11-07 01:08:22,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:22,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [835448199] [2021-11-07 01:08:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:22,185 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:22,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:22,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:22,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:08:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:22,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:08:22,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:22,599 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 01:08:22,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:22,729 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 01:08:22,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:22,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [835448199] [2021-11-07 01:08:22,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [835448199] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:22,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:22,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:08:22,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934101098] [2021-11-07 01:08:22,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:08:22,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:22,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:08:22,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:08:22,733 INFO L87 Difference]: Start difference. First operand 109 states and 153 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:22,817 INFO L93 Difference]: Finished difference Result 208 states and 294 transitions. [2021-11-07 01:08:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:08:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:08:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:22,819 INFO L225 Difference]: With dead ends: 208 [2021-11-07 01:08:22,819 INFO L226 Difference]: Without dead ends: 109 [2021-11-07 01:08:22,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:08:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-07 01:08:22,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-11-07 01:08:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4285714285714286) internal successors, (150), 108 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:22,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 150 transitions. [2021-11-07 01:08:22,830 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 150 transitions. Word has length 41 [2021-11-07 01:08:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:22,830 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 150 transitions. [2021-11-07 01:08:22,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:22,831 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 150 transitions. [2021-11-07 01:08:22,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:08:22,832 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:22,833 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:22,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:23,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:23,049 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:23,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:23,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1666510959, now seen corresponding path program 1 times [2021-11-07 01:08:23,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:23,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722093510] [2021-11-07 01:08:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:23,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:23,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:23,053 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:23,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:08:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:23,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:08:23,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:23,425 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 01:08:23,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:23,552 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 01:08:23,553 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:23,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722093510] [2021-11-07 01:08:23,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722093510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:23,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:23,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 01:08:23,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331086851] [2021-11-07 01:08:23,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:08:23,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:23,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:08:23,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:08:23,556 INFO L87 Difference]: Start difference. First operand 109 states and 150 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:23,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:23,609 INFO L93 Difference]: Finished difference Result 210 states and 280 transitions. [2021-11-07 01:08:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:08:23,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 01:08:23,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:23,611 INFO L225 Difference]: With dead ends: 210 [2021-11-07 01:08:23,611 INFO L226 Difference]: Without dead ends: 127 [2021-11-07 01:08:23,612 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:08:23,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-07 01:08:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 109. [2021-11-07 01:08:23,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.4095238095238096) internal successors, (148), 108 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:23,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 148 transitions. [2021-11-07 01:08:23,624 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 148 transitions. Word has length 41 [2021-11-07 01:08:23,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:23,625 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 148 transitions. [2021-11-07 01:08:23,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 148 transitions. [2021-11-07 01:08:23,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 01:08:23,632 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:23,632 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:23,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:23,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:23,848 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:23,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:23,849 INFO L85 PathProgramCache]: Analyzing trace with hash -423042159, now seen corresponding path program 1 times [2021-11-07 01:08:23,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:23,850 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57183149] [2021-11-07 01:08:23,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:23,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:23,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:23,851 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:23,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:08:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:24,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:08:24,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:24,326 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 01:08:24,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:24,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:08:24,489 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:24,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57183149] [2021-11-07 01:08:24,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57183149] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:24,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:24,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:08:24,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605307920] [2021-11-07 01:08:24,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:08:24,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:24,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:08:24,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:08:24,492 INFO L87 Difference]: Start difference. First operand 109 states and 148 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:24,692 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2021-11-07 01:08:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:08:24,693 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 01:08:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:24,695 INFO L225 Difference]: With dead ends: 217 [2021-11-07 01:08:24,695 INFO L226 Difference]: Without dead ends: 135 [2021-11-07 01:08:24,696 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:08:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-07 01:08:24,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2021-11-07 01:08:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 105 states have (on average 1.380952380952381) internal successors, (145), 108 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 145 transitions. [2021-11-07 01:08:24,705 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 145 transitions. Word has length 45 [2021-11-07 01:08:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:24,706 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 145 transitions. [2021-11-07 01:08:24,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 145 transitions. [2021-11-07 01:08:24,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-07 01:08:24,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:24,708 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:24,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:24,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:24,924 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:24,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash -2072078671, now seen corresponding path program 1 times [2021-11-07 01:08:24,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:24,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [847294979] [2021-11-07 01:08:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:24,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:24,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:24,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:24,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:08:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:25,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:08:25,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:25,384 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 01:08:25,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:25,523 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 01:08:25,523 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:25,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [847294979] [2021-11-07 01:08:25,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [847294979] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:25,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:25,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-07 01:08:25,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585057843] [2021-11-07 01:08:25,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:08:25,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:25,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:08:25,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:08:25,525 INFO L87 Difference]: Start difference. First operand 109 states and 145 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:25,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:25,897 INFO L93 Difference]: Finished difference Result 296 states and 388 transitions. [2021-11-07 01:08:25,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:08:25,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-07 01:08:25,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:25,899 INFO L225 Difference]: With dead ends: 296 [2021-11-07 01:08:25,899 INFO L226 Difference]: Without dead ends: 213 [2021-11-07 01:08:25,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:08:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-07 01:08:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 112. [2021-11-07 01:08:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 108 states have (on average 1.3703703703703705) internal successors, (148), 111 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2021-11-07 01:08:25,911 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 49 [2021-11-07 01:08:25,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:25,912 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2021-11-07 01:08:25,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:25,912 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2021-11-07 01:08:25,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-07 01:08:25,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:25,913 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:25,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:26,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:26,128 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1006498608, now seen corresponding path program 1 times [2021-11-07 01:08:26,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:26,129 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634198940] [2021-11-07 01:08:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:26,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:26,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:26,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:26,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:08:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:26,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:08:26,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:26,599 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 01:08:26,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:26,760 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 01:08:26,760 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:26,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634198940] [2021-11-07 01:08:26,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634198940] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:26,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:26,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 3] imperfect sequences [] total 7 [2021-11-07 01:08:26,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402673568] [2021-11-07 01:08:26,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:08:26,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:26,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:08:26,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:08:26,762 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:27,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:27,207 INFO L93 Difference]: Finished difference Result 335 states and 432 transitions. [2021-11-07 01:08:27,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:08:27,212 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-07 01:08:27,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:27,215 INFO L225 Difference]: With dead ends: 335 [2021-11-07 01:08:27,215 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 01:08:27,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:08:27,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 01:08:27,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 117. [2021-11-07 01:08:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 116 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:27,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 154 transitions. [2021-11-07 01:08:27,226 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 154 transitions. Word has length 51 [2021-11-07 01:08:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:27,227 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 154 transitions. [2021-11-07 01:08:27,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:27,227 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 154 transitions. [2021-11-07 01:08:27,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:08:27,228 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:27,228 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:27,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:27,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:27,449 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:27,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:27,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1179077135, now seen corresponding path program 1 times [2021-11-07 01:08:27,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:27,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950945565] [2021-11-07 01:08:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:27,450 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:27,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:27,451 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:27,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 01:08:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:27,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:08:27,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:28,033 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 01:08:28,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:28,219 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 01:08:28,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:28,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950945565] [2021-11-07 01:08:28,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950945565] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:28,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:28,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2021-11-07 01:08:28,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614689498] [2021-11-07 01:08:28,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:08:28,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:08:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:08:28,223 INFO L87 Difference]: Start difference. First operand 117 states and 154 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:28,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:28,679 INFO L93 Difference]: Finished difference Result 312 states and 405 transitions. [2021-11-07 01:08:28,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:08:28,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 01:08:28,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:28,681 INFO L225 Difference]: With dead ends: 312 [2021-11-07 01:08:28,681 INFO L226 Difference]: Without dead ends: 215 [2021-11-07 01:08:28,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:08:28,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-07 01:08:28,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 120. [2021-11-07 01:08:28,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.353448275862069) internal successors, (157), 119 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:28,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 157 transitions. [2021-11-07 01:08:28,691 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 157 transitions. Word has length 61 [2021-11-07 01:08:28,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:28,691 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 157 transitions. [2021-11-07 01:08:28,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:28,692 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 157 transitions. [2021-11-07 01:08:28,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-07 01:08:28,693 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:28,693 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:28,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:28,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:28,907 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:28,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:28,908 INFO L85 PathProgramCache]: Analyzing trace with hash 930930641, now seen corresponding path program 1 times [2021-11-07 01:08:28,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:28,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1880649063] [2021-11-07 01:08:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:28,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:28,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:28,910 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:28,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 01:08:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:29,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:08:29,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:29,454 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 01:08:29,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:29,577 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 01:08:29,577 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:29,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1880649063] [2021-11-07 01:08:29,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1880649063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:29,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:29,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-07 01:08:29,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595876733] [2021-11-07 01:08:29,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:08:29,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:29,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:08:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:08:29,579 INFO L87 Difference]: Start difference. First operand 120 states and 157 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:29,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:29,673 INFO L93 Difference]: Finished difference Result 259 states and 326 transitions. [2021-11-07 01:08:29,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:08:29,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-11-07 01:08:29,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:29,675 INFO L225 Difference]: With dead ends: 259 [2021-11-07 01:08:29,675 INFO L226 Difference]: Without dead ends: 166 [2021-11-07 01:08:29,675 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:08:29,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-07 01:08:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2021-11-07 01:08:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3362068965517242) internal successors, (155), 119 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 155 transitions. [2021-11-07 01:08:29,683 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 155 transitions. Word has length 61 [2021-11-07 01:08:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:29,683 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 155 transitions. [2021-11-07 01:08:29,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:29,685 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 155 transitions. [2021-11-07 01:08:29,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 01:08:29,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:29,687 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:29,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:29,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:29,904 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -961072015, now seen corresponding path program 1 times [2021-11-07 01:08:29,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:29,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398954185] [2021-11-07 01:08:29,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:29,906 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:29,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:29,906 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:29,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 01:08:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:30,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:08:30,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:30,758 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 01:08:30,764 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 01:08:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:08:30,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:31,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:08:31,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:31,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398954185] [2021-11-07 01:08:31,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398954185] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:31,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [153544930] [2021-11-07 01:08:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:31,221 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:31,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:08:31,225 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:08:31,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 01:08:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:31,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:08:31,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:08:31,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:32,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:08:32,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [153544930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:32,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:08:32,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [8, 8] total 14 [2021-11-07 01:08:32,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735900744] [2021-11-07 01:08:32,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:08:32,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:32,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:08:32,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:08:32,142 INFO L87 Difference]: Start difference. First operand 120 states and 155 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:32,343 INFO L93 Difference]: Finished difference Result 290 states and 357 transitions. [2021-11-07 01:08:32,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 01:08:32,344 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-07 01:08:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:32,345 INFO L225 Difference]: With dead ends: 290 [2021-11-07 01:08:32,346 INFO L226 Difference]: Without dead ends: 195 [2021-11-07 01:08:32,346 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:08:32,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-07 01:08:32,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 120. [2021-11-07 01:08:32,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 119 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 153 transitions. [2021-11-07 01:08:32,367 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 153 transitions. Word has length 65 [2021-11-07 01:08:32,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:32,368 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 153 transitions. [2021-11-07 01:08:32,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:32,368 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 153 transitions. [2021-11-07 01:08:32,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:08:32,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:32,370 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:32,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:32,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:32,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:32,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:32,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:32,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1164925684, now seen corresponding path program 1 times [2021-11-07 01:08:32,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:32,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [691343207] [2021-11-07 01:08:32,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:32,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:32,777 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:32,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 01:08:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:33,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:08:33,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:34,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:08:34,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:37,096 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:08:37,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-07 01:08:37,130 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-07 01:08:37,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-07 01:08:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:08:37,304 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:37,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [691343207] [2021-11-07 01:08:37,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [691343207] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:37,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:37,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-07 01:08:37,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746647123] [2021-11-07 01:08:37,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:08:37,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:37,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:08:37,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:08:37,306 INFO L87 Difference]: Start difference. First operand 120 states and 153 transitions. Second operand has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:38,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:38,514 INFO L93 Difference]: Finished difference Result 164 states and 207 transitions. [2021-11-07 01:08:38,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:08:38,515 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:08:38,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:38,516 INFO L225 Difference]: With dead ends: 164 [2021-11-07 01:08:38,516 INFO L226 Difference]: Without dead ends: 124 [2021-11-07 01:08:38,517 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:08:38,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-07 01:08:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-11-07 01:08:38,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 118 states have (on average 1.3135593220338984) internal successors, (155), 121 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 155 transitions. [2021-11-07 01:08:38,542 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 155 transitions. Word has length 67 [2021-11-07 01:08:38,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:38,543 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 155 transitions. [2021-11-07 01:08:38,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.928571428571429) internal successors, (125), 14 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:38,543 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 155 transitions. [2021-11-07 01:08:38,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:08:38,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:38,544 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:38,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:38,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:38,758 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:38,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:38,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1166772726, now seen corresponding path program 1 times [2021-11-07 01:08:38,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:38,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [944857509] [2021-11-07 01:08:38,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:38,760 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:38,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:38,760 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:38,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 01:08:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:39,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:08:39,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:39,517 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-07 01:08:39,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2021-11-07 01:08:40,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-07 01:08:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:08:40,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:40,884 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 96 treesize of output 90 [2021-11-07 01:08:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:08:41,091 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:41,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [944857509] [2021-11-07 01:08:41,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [944857509] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:41,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:41,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-11-07 01:08:41,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123065039] [2021-11-07 01:08:41,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:08:41,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:41,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:08:41,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:08:41,093 INFO L87 Difference]: Start difference. First operand 122 states and 155 transitions. Second operand has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:43,101 INFO L93 Difference]: Finished difference Result 368 states and 471 transitions. [2021-11-07 01:08:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:08:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:08:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:43,103 INFO L225 Difference]: With dead ends: 368 [2021-11-07 01:08:43,103 INFO L226 Difference]: Without dead ends: 262 [2021-11-07 01:08:43,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:08:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-07 01:08:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 130. [2021-11-07 01:08:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 126 states have (on average 1.2936507936507937) internal successors, (163), 129 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:43,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 163 transitions. [2021-11-07 01:08:43,116 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 163 transitions. Word has length 67 [2021-11-07 01:08:43,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:43,117 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 163 transitions. [2021-11-07 01:08:43,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.785714285714286) internal successors, (123), 14 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:43,117 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 163 transitions. [2021-11-07 01:08:43,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:08:43,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:43,118 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:43,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 01:08:43,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:43,359 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:43,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:43,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1353187208, now seen corresponding path program 1 times [2021-11-07 01:08:43,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:43,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030669051] [2021-11-07 01:08:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:43,360 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:43,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:43,361 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:43,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 01:08:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:43,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 01:08:43,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:44,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:08:44,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:47,794 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:08:47,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 43 [2021-11-07 01:08:47,813 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-07 01:08:47,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 34 [2021-11-07 01:08:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:08:47,894 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:47,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030669051] [2021-11-07 01:08:47,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030669051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:08:47,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:08:47,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 17 [2021-11-07 01:08:47,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417946174] [2021-11-07 01:08:47,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 01:08:47,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:08:47,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 01:08:47,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:08:47,897 INFO L87 Difference]: Start difference. First operand 130 states and 163 transitions. Second operand has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:08:50,454 INFO L93 Difference]: Finished difference Result 461 states and 584 transitions. [2021-11-07 01:08:50,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 01:08:50,456 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-07 01:08:50,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:08:50,458 INFO L225 Difference]: With dead ends: 461 [2021-11-07 01:08:50,458 INFO L226 Difference]: Without dead ends: 374 [2021-11-07 01:08:50,459 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 01:08:50,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-11-07 01:08:50,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 239. [2021-11-07 01:08:50,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 235 states have (on average 1.2893617021276595) internal successors, (303), 238 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:50,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 303 transitions. [2021-11-07 01:08:50,498 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 303 transitions. Word has length 67 [2021-11-07 01:08:50,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:08:50,498 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 303 transitions. [2021-11-07 01:08:50,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 17 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:08:50,499 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 303 transitions. [2021-11-07 01:08:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 01:08:50,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:08:50,499 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:08:50,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:08:50,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:08:50,700 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-07 01:08:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:08:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash -673128838, now seen corresponding path program 1 times [2021-11-07 01:08:50,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:08:50,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137108925] [2021-11-07 01:08:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:50,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:08:50,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:08:50,702 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:08:50,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 01:08:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:51,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 01:08:51,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:52,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2021-11-07 01:08:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:08:52,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:08:52,317 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:08:52,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 20 [2021-11-07 01:08:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:08:52,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:08:52,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137108925] [2021-11-07 01:08:52,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137108925] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:08:52,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [49805700] [2021-11-07 01:08:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:08:52,556 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:08:52,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:08:52,557 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:08:52,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-07 01:08:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:08:53,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 01:08:53,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:08:53,701 INFO L354 Elim1Store]: treesize reduction 19, result has 50.0 percent of original size [2021-11-07 01:08:53,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2021-11-07 01:09:00,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:09:00,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:01,899 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 177 treesize of output 169 [2021-11-07 01:09:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:09:02,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [49805700] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:09:02,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423782673] [2021-11-07 01:09:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:09:02,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:09:02,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:09:02,111 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:09:02,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_03b810f5-61d1-4d60-b818-d1122dde561a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 01:09:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:02,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 01:09:02,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:03,135 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 01:09:03,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2021-11-07 01:09:20,682 INFO L354 Elim1Store]: treesize reduction 27, result has 27.0 percent of original size [2021-11-07 01:09:20,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 45 [2021-11-07 01:09:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:09:20,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:09:21,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 349 treesize of output 333 [2021-11-07 01:09:22,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 01:09:22,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423782673] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:09:22,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 01:09:22,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13, 13, 13, 13] total 48 [2021-11-07 01:09:22,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132118117] [2021-11-07 01:09:22,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 01:09:22,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:09:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 01:09:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2056, Unknown=4, NotChecked=0, Total=2256 [2021-11-07 01:09:22,074 INFO L87 Difference]: Start difference. First operand 239 states and 303 transitions. Second operand has 48 states, 48 states have (on average 6.041666666666667) internal successors, (290), 48 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:09:56,814 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification. DAG size of input: 74 DAG size of output: 54 [2021-11-07 01:10:20,532 WARN L207 SmtUtils]: Spent 18.42 s on a formula simplification. DAG size of input: 98 DAG size of output: 72 [2021-11-07 01:11:08,650 WARN L207 SmtUtils]: Spent 11.43 s on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-11-07 01:12:00,336 WARN L207 SmtUtils]: Spent 15.35 s on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-11-07 01:12:09,348 WARN L207 SmtUtils]: Spent 8.25 s on a formula simplification. DAG size of input: 56 DAG size of output: 47 [2021-11-07 01:12:30,225 WARN L207 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2021-11-07 01:12:48,757 WARN L207 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-11-07 01:14:31,183 WARN L207 SmtUtils]: Spent 16.77 s on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2021-11-07 01:15:38,065 WARN L207 SmtUtils]: Spent 13.07 s on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-11-07 01:16:06,843 WARN L207 SmtUtils]: Spent 8.18 s on a formula simplification. DAG size of input: 51 DAG size of output: 42 [2021-11-07 01:16:33,979 WARN L207 SmtUtils]: Spent 8.28 s on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2021-11-07 01:17:13,918 WARN L207 SmtUtils]: Spent 26.05 s on a formula simplification. DAG size of input: 99 DAG size of output: 74 [2021-11-07 01:17:36,510 WARN L207 SmtUtils]: Spent 18.68 s on a formula simplification. DAG size of input: 97 DAG size of output: 77 [2021-11-07 01:17:49,503 WARN L207 SmtUtils]: Spent 8.22 s on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2021-11-07 01:18:02,239 WARN L207 SmtUtils]: Spent 8.30 s on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2021-11-07 01:18:18,812 WARN L207 SmtUtils]: Spent 14.20 s on a formula simplification that was a NOOP. DAG size: 96 [2021-11-07 01:18:34,348 WARN L207 SmtUtils]: Spent 14.92 s on a formula simplification that was a NOOP. DAG size: 97 [2021-11-07 01:18:41,162 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification that was a NOOP. DAG size: 54 [2021-11-07 01:18:48,220 WARN L207 SmtUtils]: Spent 6.15 s on a formula simplification that was a NOOP. DAG size: 55 [2021-11-07 01:19:15,694 WARN L207 SmtUtils]: Spent 15.55 s on a formula simplification that was a NOOP. DAG size: 84 [2021-11-07 01:19:36,208 WARN L207 SmtUtils]: Spent 15.42 s on a formula simplification that was a NOOP. DAG size: 95 [2021-11-07 01:19:53,415 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 45 [2021-11-07 01:20:10,049 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification that was a NOOP. DAG size: 53 [2021-11-07 01:20:26,945 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification that was a NOOP. DAG size: 57 [2021-11-07 01:20:48,576 WARN L207 SmtUtils]: Spent 8.86 s on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-11-07 01:21:04,078 WARN L207 SmtUtils]: Spent 5.13 s on a formula simplification that was a NOOP. DAG size: 37 [2021-11-07 01:22:16,009 WARN L207 SmtUtils]: Spent 19.27 s on a formula simplification. DAG size of input: 87 DAG size of output: 67