./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan --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 32bit --witnessprinter.graph.data.programhash 808e109e6e5bbd4457b727764ccf6e4076a38ae9 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan --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 32bit --witnessprinter.graph.data.programhash 808e109e6e5bbd4457b727764ccf6e4076a38ae9 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:03:02,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:03:02,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:03:02,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:03:02,443 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:03:02,449 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:03:02,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:03:02,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:03:02,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:03:02,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:03:02,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:03:02,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:03:02,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:03:02,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:03:02,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:03:02,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:03:02,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:03:02,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:03:02,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:03:02,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:03:02,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:03:02,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:03:02,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:03:02,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:03:02,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:03:02,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:03:02,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:03:02,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:03:02,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:03:02,522 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:03:02,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:03:02,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:03:02,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:03:02,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:03:02,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:03:02,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:03:02,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:03:02,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:03:02,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:03:02,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:03:02,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:03:02,532 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:03:02,584 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:03:02,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:03:02,586 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:03:02,586 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:03:02,586 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:03:02,587 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:03:02,587 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:03:02,587 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:03:02,587 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:03:02,587 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:03:02,589 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:03:02,589 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:03:02,589 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:03:02,589 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:03:02,590 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:03:02,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:03:02,591 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:03:02,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:03:02,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:03:02,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:03:02,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:03:02,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:03:02,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:03:02,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:03:02,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:03:02,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:03:02,593 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:03:02,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:03:02,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:03:02,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:03:02,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:03:02,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:02,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:03:02,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:03:02,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:03:02,601 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:03:02,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:03:02,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:03:02,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:03:02,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:03:02,602 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-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 808e109e6e5bbd4457b727764ccf6e4076a38ae9 [2020-11-22 13:03:02,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:03:02,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:03:02,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:03:02,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:03:02,913 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:03:02,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-11-22 13:03:03,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data/ee9e6ed07/d1d0f9a521244e2e9b004bcf632bf02e/FLAGe5c29426c [2020-11-22 13:03:03,565 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:03:03,566 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-11-22 13:03:03,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data/ee9e6ed07/d1d0f9a521244e2e9b004bcf632bf02e/FLAGe5c29426c [2020-11-22 13:03:03,852 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data/ee9e6ed07/d1d0f9a521244e2e9b004bcf632bf02e [2020-11-22 13:03:03,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:03:03,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:03:03,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:03,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:03:03,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:03:03,868 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a1e9179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:03, skipping insertion in model container [2020-11-22 13:03:03,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:03" (1/1) ... [2020-11-22 13:03:03,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:03:03,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:04,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:04,251 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) [2020-11-22 13:03:04,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@21c91e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:04, skipping insertion in model container [2020-11-22 13:03:04,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:04,253 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-11-22 13:03:04,255 INFO L168 Benchmark]: Toolchain (without parser) took 398.71 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 68.7 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:04,256 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 33.1 MB in the beginning and 33.0 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:04,257 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.06 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 68.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:04,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 75.5 MB. Free memory was 33.1 MB in the beginning and 33.0 MB in the end (delta: 63.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 389.06 ms. Allocated memory is still 94.4 MB. Free memory was 63.2 MB in the beginning and 68.7 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 627]: 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... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:03:06,633 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:03:06,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:03:06,691 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:03:06,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:03:06,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:03:06,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:03:06,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:03:06,709 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:03:06,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:03:06,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:03:06,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:03:06,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:03:06,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:03:06,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:03:06,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:03:06,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:03:06,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:03:06,733 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:03:06,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:03:06,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:03:06,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:03:06,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:03:06,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:03:06,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:03:06,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:03:06,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:03:06,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:03:06,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:03:06,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:03:06,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:03:06,777 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:03:06,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:03:06,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:03:06,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:03:06,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:03:06,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:03:06,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:03:06,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:03:06,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:03:06,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:03:06,786 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 13:03:06,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:03:06,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:03:06,838 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:03:06,838 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:03:06,838 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:03:06,839 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:03:06,839 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:03:06,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:03:06,839 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:03:06,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:03:06,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:03:06,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:03:06,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:03:06,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:03:06,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:03:06,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:03:06,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:03:06,843 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 13:03:06,843 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 13:03:06,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:03:06,844 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:03:06,844 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:03:06,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:03:06,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:03:06,845 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 13:03:06,845 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:03:06,845 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:03:06,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:06,846 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:03:06,846 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:03:06,846 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:03:06,846 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 13:03:06,846 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 13:03:06,847 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:03:06,847 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:03:06,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:03:06,847 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-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 808e109e6e5bbd4457b727764ccf6e4076a38ae9 [2020-11-22 13:03:07,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:03:07,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:03:07,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:03:07,263 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:03:07,265 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:03:07,266 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-11-22 13:03:07,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data/44767be51/87f5c8d5552d45d7812f0b539f7641e8/FLAGbf6ef23c3 [2020-11-22 13:03:07,971 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:03:07,979 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/sv-benchmarks/c/product-lines/minepump_spec3_product40.cil.c [2020-11-22 13:03:08,000 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data/44767be51/87f5c8d5552d45d7812f0b539f7641e8/FLAGbf6ef23c3 [2020-11-22 13:03:08,246 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/data/44767be51/87f5c8d5552d45d7812f0b539f7641e8 [2020-11-22 13:03:08,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:03:08,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:03:08,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:08,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:03:08,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:03:08,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:08" (1/1) ... [2020-11-22 13:03:08,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79a67f67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:08, skipping insertion in model container [2020-11-22 13:03:08,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:03:08" (1/1) ... [2020-11-22 13:03:08,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:03:08,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:08,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:08,821 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-11-22 13:03:08,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:03:08,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:08,954 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:03:09,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:03:09,081 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:03:09,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09 WrapperNode [2020-11-22 13:03:09,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:03:09,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:09,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:03:09,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:03:09,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,136 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:03:09,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:03:09,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:03:09,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:03:09,218 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... [2020-11-22 13:03:09,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:03:09,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:03:09,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:03:09,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:03:09,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:03:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:03:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 13:03:09,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:03:09,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:03:11,745 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:03:11,745 INFO L298 CfgBuilder]: Removed 174 assume(true) statements. [2020-11-22 13:03:11,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:11 BoogieIcfgContainer [2020-11-22 13:03:11,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:03:11,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:03:11,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:03:11,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:03:11,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:03:08" (1/3) ... [2020-11-22 13:03:11,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44eadf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:11, skipping insertion in model container [2020-11-22 13:03:11,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:03:09" (2/3) ... [2020-11-22 13:03:11,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44eadf43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:03:11, skipping insertion in model container [2020-11-22 13:03:11,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:11" (3/3) ... [2020-11-22 13:03:11,755 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product40.cil.c [2020-11-22 13:03:11,766 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:03:11,773 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-22 13:03:11,784 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-22 13:03:11,815 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:03:11,815 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:03:11,815 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:03:11,815 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:03:11,815 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:03:11,815 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:03:11,816 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:03:11,816 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:03:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-11-22 13:03:11,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-22 13:03:11,837 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:11,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:11,838 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:11,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:11,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1067326389, now seen corresponding path program 1 times [2020-11-22 13:03:11,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:11,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1261895585] [2020-11-22 13:03:11,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-22 13:03:12,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:12,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:03:12,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:12,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:12,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1261895585] [2020-11-22 13:03:12,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:12,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:03:12,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424081364] [2020-11-22 13:03:12,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:03:12,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:12,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:03:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:03:12,135 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 2 states. [2020-11-22 13:03:12,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:12,164 INFO L93 Difference]: Finished difference Result 235 states and 356 transitions. [2020-11-22 13:03:12,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:03:12,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-11-22 13:03:12,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:12,176 INFO L225 Difference]: With dead ends: 235 [2020-11-22 13:03:12,176 INFO L226 Difference]: Without dead ends: 115 [2020-11-22 13:03:12,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:03:12,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-11-22 13:03:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-11-22 13:03:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-11-22 13:03:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2020-11-22 13:03:12,220 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 18 [2020-11-22 13:03:12,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:12,221 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2020-11-22 13:03:12,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:03:12,221 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2020-11-22 13:03:12,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-22 13:03:12,223 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:12,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:03:12,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 13:03:12,442 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:12,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:12,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1978357142, now seen corresponding path program 1 times [2020-11-22 13:03:12,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:12,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933145821] [2020-11-22 13:03:12,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-22 13:03:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:12,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:03:12,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:12,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:12,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:12,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933145821] [2020-11-22 13:03:12,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:12,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:03:12,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878497932] [2020-11-22 13:03:12,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:03:12,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:12,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:03:12,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:03:12,679 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand 4 states. [2020-11-22 13:03:12,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:12,704 INFO L93 Difference]: Finished difference Result 115 states and 168 transitions. [2020-11-22 13:03:12,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:03:12,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-22 13:03:12,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:12,706 INFO L225 Difference]: With dead ends: 115 [2020-11-22 13:03:12,706 INFO L226 Difference]: Without dead ends: 49 [2020-11-22 13:03:12,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:03:12,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-22 13:03:12,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-11-22 13:03:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-22 13:03:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 71 transitions. [2020-11-22 13:03:12,723 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 71 transitions. Word has length 19 [2020-11-22 13:03:12,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:12,724 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 71 transitions. [2020-11-22 13:03:12,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:03:12,724 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 71 transitions. [2020-11-22 13:03:12,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-22 13:03:12,725 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:12,725 INFO L422 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] [2020-11-22 13:03:12,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 13:03:12,926 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:12,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:12,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1740217190, now seen corresponding path program 1 times [2020-11-22 13:03:12,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:12,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650215626] [2020-11-22 13:03:12,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-22 13:03:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:13,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:03:13,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:13,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:13,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650215626] [2020-11-22 13:03:13,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:13,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:03:13,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798950375] [2020-11-22 13:03:13,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:03:13,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:13,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:03:13,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:03:13,154 INFO L87 Difference]: Start difference. First operand 49 states and 71 transitions. Second operand 4 states. [2020-11-22 13:03:13,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:13,213 INFO L93 Difference]: Finished difference Result 160 states and 238 transitions. [2020-11-22 13:03:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:03:13,214 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-22 13:03:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:13,216 INFO L225 Difference]: With dead ends: 160 [2020-11-22 13:03:13,216 INFO L226 Difference]: Without dead ends: 117 [2020-11-22 13:03:13,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:03:13,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-22 13:03:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 70. [2020-11-22 13:03:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-22 13:03:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 103 transitions. [2020-11-22 13:03:13,233 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 103 transitions. Word has length 24 [2020-11-22 13:03:13,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:13,233 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 103 transitions. [2020-11-22 13:03:13,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:03:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 103 transitions. [2020-11-22 13:03:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-22 13:03:13,235 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:13,235 INFO L422 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] [2020-11-22 13:03:13,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-22 13:03:13,452 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:13,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:13,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1869059729, now seen corresponding path program 1 times [2020-11-22 13:03:13,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:13,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [341862766] [2020-11-22 13:03:13,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-22 13:03:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:13,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-22 13:03:13,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:13,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:13,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [341862766] [2020-11-22 13:03:13,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:13,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-22 13:03:13,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188494960] [2020-11-22 13:03:13,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:03:13,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:13,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:03:13,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:13,678 INFO L87 Difference]: Start difference. First operand 70 states and 103 transitions. Second operand 3 states. [2020-11-22 13:03:13,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:13,769 INFO L93 Difference]: Finished difference Result 157 states and 233 transitions. [2020-11-22 13:03:13,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:03:13,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-22 13:03:13,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:13,770 INFO L225 Difference]: With dead ends: 157 [2020-11-22 13:03:13,770 INFO L226 Difference]: Without dead ends: 93 [2020-11-22 13:03:13,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:03:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-22 13:03:13,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-11-22 13:03:13,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-22 13:03:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 130 transitions. [2020-11-22 13:03:13,784 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 130 transitions. Word has length 26 [2020-11-22 13:03:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:13,784 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 130 transitions. [2020-11-22 13:03:13,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:03:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 130 transitions. [2020-11-22 13:03:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-22 13:03:13,785 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:13,786 INFO L422 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] [2020-11-22 13:03:14,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-22 13:03:14,002 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:14,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:14,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1176876603, now seen corresponding path program 1 times [2020-11-22 13:03:14,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:14,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2144283876] [2020-11-22 13:03:14,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-22 13:03:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:03:14,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:03:14,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:03:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:14,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:03:14,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:03:14,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2144283876] [2020-11-22 13:03:14,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:03:14,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-22 13:03:14,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623205536] [2020-11-22 13:03:14,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-22 13:03:14,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 13:03:14,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-22 13:03:14,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-22 13:03:14,284 INFO L87 Difference]: Start difference. First operand 91 states and 130 transitions. Second operand 8 states. [2020-11-22 13:03:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:03:14,840 INFO L93 Difference]: Finished difference Result 986 states and 1451 transitions. [2020-11-22 13:03:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-22 13:03:14,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-11-22 13:03:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:03:14,847 INFO L225 Difference]: With dead ends: 986 [2020-11-22 13:03:14,847 INFO L226 Difference]: Without dead ends: 901 [2020-11-22 13:03:14,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-11-22 13:03:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2020-11-22 13:03:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 232. [2020-11-22 13:03:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-11-22 13:03:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 327 transitions. [2020-11-22 13:03:14,893 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 327 transitions. Word has length 27 [2020-11-22 13:03:14,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:03:14,893 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 327 transitions. [2020-11-22 13:03:14,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-22 13:03:14,893 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 327 transitions. [2020-11-22 13:03:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-22 13:03:14,895 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:03:14,895 INFO L422 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] [2020-11-22 13:03:15,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-22 13:03:15,111 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:03:15,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:03:15,111 INFO L82 PathProgramCache]: Analyzing trace with hash -523387139, now seen corresponding path program 1 times [2020-11-22 13:03:15,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 13:03:15,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943886188] [2020-11-22 13:03:15,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-22 13:03:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:16,106 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:03:17,080 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:03:17,288 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 13:03:17,288 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:03:17,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-22 13:03:17,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:03:17 BoogieIcfgContainer [2020-11-22 13:03:17,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:03:17,633 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:03:17,633 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:03:17,633 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:03:17,634 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:03:11" (3/4) ... [2020-11-22 13:03:17,635 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 13:03:17,763 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a50fed6c-ab1d-4941-afd1-9bb90872dec1/bin/utaipan/witness.graphml [2020-11-22 13:03:17,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:03:17,766 INFO L168 Benchmark]: Toolchain (without parser) took 9512.52 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 45.1 MB in the beginning and 46.4 MB in the end (delta: -1.2 MB). Peak memory consumption was 26.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:17,766 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 46.2 MB in the end (delta: 32.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:03:17,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.12 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 30.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:17,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.37 ms. Allocated memory is still 65.0 MB. Free memory was 48.2 MB in the beginning and 44.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:17,768 INFO L168 Benchmark]: Boogie Preprocessor took 90.15 ms. Allocated memory is still 65.0 MB. Free memory was 44.6 MB in the beginning and 41.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:17,769 INFO L168 Benchmark]: RCFGBuilder took 2448.49 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 41.9 MB in the beginning and 45.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:17,769 INFO L168 Benchmark]: TraceAbstraction took 5883.48 ms. Allocated memory is still 92.3 MB. Free memory was 44.9 MB in the beginning and 57.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:17,769 INFO L168 Benchmark]: Witness Printer took 131.05 ms. Allocated memory is still 92.3 MB. Free memory was 57.7 MB in the beginning and 46.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:03:17,777 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 65.0 MB. Free memory was 46.3 MB in the beginning and 46.2 MB in the end (delta: 32.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 827.12 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 30.3 MB in the end (delta: 14.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 109.37 ms. Allocated memory is still 65.0 MB. Free memory was 48.2 MB in the beginning and 44.6 MB in the end (delta: 3.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 90.15 ms. Allocated memory is still 65.0 MB. Free memory was 44.6 MB in the beginning and 41.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2448.49 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 41.9 MB in the beginning and 45.4 MB in the end (delta: -3.5 MB). Peak memory consumption was 25.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5883.48 ms. Allocated memory is still 92.3 MB. Free memory was 44.9 MB in the beginning and 57.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. * Witness Printer took 131.05 ms. Allocated memory is still 92.3 MB. Free memory was 57.7 MB in the beginning and 46.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L42] int cleanupTimeShifts = 4; [L231] int waterLevel = 1; [L232] int methaneLevelCritical = 0; [L329] int pumpRunning = 0; [L330] int systemActive = 1; [L768] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L123] int retValue_acc ; [L124] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L172] int retValue_acc ; [L175] retValue_acc = 1 [L176] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L130] tmp = valid_product() [L132] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L531] int splverifierCounter ; [L532] int tmp ; [L533] int tmp___0 ; [L534] int tmp___1 ; [L535] int tmp___2 ; [L538] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L540] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L542] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L548] tmp = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L249] COND TRUE waterLevel < 2 [L250] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L558] tmp___0 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L568] tmp___2 = __VERIFIER_nondet_int() [L570] COND FALSE !(\read(tmp___2)) [L576] tmp___1 = __VERIFIER_nondet_int() [L578] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L510] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L517] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L336] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L343] COND FALSE !(\read(systemActive)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L186] int tmp ; [L187] int tmp___0 ; [L188] int tmp___1 ; [L270] int retValue_acc ; [L273] retValue_acc = methaneLevelCritical [L274] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L192] tmp = isMethaneLevelCritical() [L194] COND FALSE !(\read(tmp)) [L302] int retValue_acc ; [L305] retValue_acc = waterLevel [L306] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L198] tmp___0 = getWaterLevel() [L200] COND TRUE tmp___0 == 2 [L443] int retValue_acc ; [L446] retValue_acc = pumpRunning [L447] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L202] tmp___1 = isPumpRunning() [L204] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L3] __assert_fail("0", "minepump_spec3_product40.cil.c", 3, "reach_error") VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 122 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.6s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 492 SDtfs, 1250 SDslu, 980 SDs, 0 SdLazy, 179 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 718 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 218 ConstructedInterpolants, 0 QuantifiedInterpolants, 10826 SizeOfPredicates, 6 NumberOfNonLiveVariables, 997 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...