./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/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_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/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 32bit --witnessprinter.graph.data.programhash f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:11,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:11,378 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:11,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:11,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:11,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:11,418 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:11,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:11,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:11,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:11,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:11,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:11,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:11,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:11,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:11,432 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:11,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:11,434 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:11,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:11,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:11,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:11,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:11,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:11,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:11,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:11,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:11,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:11,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:11,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:11,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:11,456 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:11,457 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:11,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:11,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:11,460 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:11,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:11,461 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:11,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:11,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:11,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:11,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:11,466 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:29:11,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:11,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:11,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:11,494 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:11,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:11,495 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:11,495 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:29:11,496 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:11,496 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:11,497 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:29:11,497 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:29:11,497 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:11,498 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:29:11,498 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:29:11,499 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:29:11,500 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:11,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:29:11,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:29:11,501 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:29:11,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:11,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:11,502 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:11,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:11,502 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:11,502 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:29:11,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:11,503 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:11,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:11,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:11,504 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:11,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:11,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:11,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:11,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:11,505 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:29:11,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:29:11,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:11,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:11,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:11,506 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_3fb92c61-7754-4e44-bcc7-4dc736502591/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2021-11-07 01:29:11,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:11,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:11,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:11,764 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:11,765 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:11,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2021-11-07 01:29:11,836 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data/9722f21d4/409038404c0c4e9498135c87ca4f617b/FLAG9d2fbede7 [2021-11-07 01:29:12,509 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:12,509 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2021-11-07 01:29:12,533 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data/9722f21d4/409038404c0c4e9498135c87ca4f617b/FLAG9d2fbede7 [2021-11-07 01:29:12,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data/9722f21d4/409038404c0c4e9498135c87ca4f617b [2021-11-07 01:29:12,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:12,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:12,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:12,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:12,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:12,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:12" (1/1) ... [2021-11-07 01:29:12,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0701b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:12, skipping insertion in model container [2021-11-07 01:29:12,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:12" (1/1) ... [2021-11-07 01:29:12,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:12,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:13,036 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_3fb92c61-7754-4e44-bcc7-4dc736502591/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2021-11-07 01:29:13,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:13,469 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 01:29:13,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@708a044e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:13, skipping insertion in model container [2021-11-07 01:29:13,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:13,471 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 01:29:13,473 INFO L168 Benchmark]: Toolchain (without parser) took 743.94 ms. Allocated memory was 107.0 MB in the beginning and 151.0 MB in the end (delta: 44.0 MB). Free memory was 71.1 MB in the beginning and 111.6 MB in the end (delta: -40.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:13,475 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 107.0 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:29:13,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.73 ms. Allocated memory was 107.0 MB in the beginning and 151.0 MB in the end (delta: 44.0 MB). Free memory was 71.1 MB in the beginning and 111.6 MB in the end (delta: -40.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:29:13,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 107.0 MB. Free memory is still 61.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 740.73 ms. Allocated memory was 107.0 MB in the beginning and 151.0 MB in the end (delta: 44.0 MB). Free memory was 71.1 MB in the beginning and 111.6 MB in the end (delta: -40.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: 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_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/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_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/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 32bit --witnessprinter.graph.data.programhash f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:29:15,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:29:15,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:29:15,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:29:15,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:29:15,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:29:15,764 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:29:15,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:29:15,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:29:15,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:29:15,772 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:29:15,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:29:15,774 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:29:15,775 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:29:15,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:29:15,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:29:15,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:29:15,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:29:15,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:29:15,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:29:15,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:29:15,792 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:29:15,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:29:15,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:29:15,800 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:29:15,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:29:15,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:29:15,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:29:15,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:29:15,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:29:15,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:29:15,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:29:15,817 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:29:15,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:29:15,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:29:15,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:29:15,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:29:15,822 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:29:15,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:29:15,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:29:15,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:29:15,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:29:15,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:29:15,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:29:15,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:29:15,874 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:29:15,874 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:29:15,874 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:29:15,874 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:29:15,875 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:29:15,875 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:29:15,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:29:15,877 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:29:15,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:29:15,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:29:15,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:29:15,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:29:15,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:29:15,879 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:29:15,879 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:29:15,879 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:29:15,880 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:29:15,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:29:15,880 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:29:15,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:29:15,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:29:15,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:29:15,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:29:15,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:15,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:29:15,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:29:15,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:29:15,882 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:29:15,882 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:29:15,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:29:15,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:29:15,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:29:15,884 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_3fb92c61-7754-4e44-bcc7-4dc736502591/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f89a8ce65f650dd979d04d2db9dc53ba483e2a2b64be3f70ae15b036e4b11b5a [2021-11-07 01:29:16,300 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:29:16,322 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:29:16,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:29:16,326 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:29:16,327 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:29:16,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2021-11-07 01:29:16,394 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data/813e410a6/55f240eb1c524dd5a5ad09aed11897c5/FLAGd50b34b8a [2021-11-07 01:29:17,140 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:29:17,141 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c [2021-11-07 01:29:17,172 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data/813e410a6/55f240eb1c524dd5a5ad09aed11897c5/FLAGd50b34b8a [2021-11-07 01:29:17,251 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/data/813e410a6/55f240eb1c524dd5a5ad09aed11897c5 [2021-11-07 01:29:17,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:29:17,256 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:29:17,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:17,260 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:29:17,263 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:29:17,264 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:17" (1/1) ... [2021-11-07 01:29:17,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6444d37b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:17, skipping insertion in model container [2021-11-07 01:29:17,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:29:17" (1/1) ... [2021-11-07 01:29:17,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:29:17,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:17,630 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_3fb92c61-7754-4e44-bcc7-4dc736502591/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2021-11-07 01:29:18,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:18,096 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 01:29:18,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:29:18,130 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_3fb92c61-7754-4e44-bcc7-4dc736502591/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2021-11-07 01:29:18,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:18,250 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:29:18,262 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_3fb92c61-7754-4e44-bcc7-4dc736502591/sv-benchmarks/c/product-lines/elevator_spec13_product22.cil.c[1811,1824] [2021-11-07 01:29:18,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:29:18,445 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:29:18,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18 WrapperNode [2021-11-07 01:29:18,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:29:18,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:18,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:29:18,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:29:18,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:18,501 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:19,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:29:19,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:29:19,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:29:19,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:29:19,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:19,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:19,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:19,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:20,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:20,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:20,939 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:21,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:29:21,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:29:21,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:29:21,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:29:21,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (1/1) ... [2021-11-07 01:29:21,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:29:21,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:29:21,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:29:21,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:29:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:29:21,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:29:21,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:29:21,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:29:53,532 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:29:53,532 INFO L299 CfgBuilder]: Removed 3571 assume(true) statements. [2021-11-07 01:29:53,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:53 BoogieIcfgContainer [2021-11-07 01:29:53,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:29:53,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:29:53,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:29:53,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:29:53,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:29:17" (1/3) ... [2021-11-07 01:29:53,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16088caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:53, skipping insertion in model container [2021-11-07 01:29:53,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:29:18" (2/3) ... [2021-11-07 01:29:53,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16088caf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:29:53, skipping insertion in model container [2021-11-07 01:29:53,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:29:53" (3/3) ... [2021-11-07 01:29:53,560 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product22.cil.c [2021-11-07 01:29:53,566 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:29:53,566 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:29:53,686 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:29:53,693 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 01:29:53,693 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:29:54,034 INFO L276 IsEmpty]: Start isEmpty. Operand has 17136 states, 17125 states have (on average 1.8983357664233578) internal successors, (32509), 17135 states have internal predecessors, (32509), 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 01:29:54,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:29:54,068 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:54,069 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 01:29:54,070 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:29:54,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:54,080 INFO L85 PathProgramCache]: Analyzing trace with hash 981100609, now seen corresponding path program 1 times [2021-11-07 01:29:54,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:54,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29219368] [2021-11-07 01:29:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:54,098 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:54,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:54,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:54,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:29:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:54,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:29:54,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:54,727 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 01:29:54,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:54,817 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 01:29:54,818 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:54,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29219368] [2021-11-07 01:29:54,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29219368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:54,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:54,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:29:54,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842311058] [2021-11-07 01:29:54,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:29:54,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:54,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:29:54,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:29:54,889 INFO L87 Difference]: Start difference. First operand has 17136 states, 17125 states have (on average 1.8983357664233578) internal successors, (32509), 17135 states have internal predecessors, (32509), 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 01:29:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:55,656 INFO L93 Difference]: Finished difference Result 30901 states and 58615 transitions. [2021-11-07 01:29:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:29:55,658 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 01:29:55,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:55,802 INFO L225 Difference]: With dead ends: 30901 [2021-11-07 01:29:55,802 INFO L226 Difference]: Without dead ends: 17132 [2021-11-07 01:29:55,836 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 01:29:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17132 states. [2021-11-07 01:29:56,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17132 to 17132. [2021-11-07 01:29:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17132 states, 17122 states have (on average 1.890550169372737) internal successors, (32370), 17131 states have internal predecessors, (32370), 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 01:29:56,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17132 states to 17132 states and 32370 transitions. [2021-11-07 01:29:56,780 INFO L78 Accepts]: Start accepts. Automaton has 17132 states and 32370 transitions. Word has length 41 [2021-11-07 01:29:56,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:29:56,781 INFO L470 AbstractCegarLoop]: Abstraction has 17132 states and 32370 transitions. [2021-11-07 01:29:56,782 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 01:29:56,783 INFO L276 IsEmpty]: Start isEmpty. Operand 17132 states and 32370 transitions. [2021-11-07 01:29:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:29:56,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:29:56,788 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 01:29:56,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:29:57,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:29:57,002 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:29:57,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:29:57,003 INFO L85 PathProgramCache]: Analyzing trace with hash 462214019, now seen corresponding path program 1 times [2021-11-07 01:29:57,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:29:57,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687101052] [2021-11-07 01:29:57,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:29:57,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:29:57,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:29:57,008 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:29:57,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:29:57,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:29:57,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:29:57,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:29:57,532 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 01:29:57,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:29:57,666 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 01:29:57,666 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:29:57,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687101052] [2021-11-07 01:29:57,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687101052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:29:57,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:29:57,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:29:57,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987798650] [2021-11-07 01:29:57,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:29:57,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:29:57,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:29:57,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:29:57,670 INFO L87 Difference]: Start difference. First operand 17132 states and 32370 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 01:29:59,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:29:59,811 INFO L93 Difference]: Finished difference Result 58181 states and 109932 transitions. [2021-11-07 01:29:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:29:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 01:29:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:29:59,984 INFO L225 Difference]: With dead ends: 58181 [2021-11-07 01:29:59,985 INFO L226 Difference]: Without dead ends: 41057 [2021-11-07 01:30:00,020 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:30:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41057 states. [2021-11-07 01:30:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41057 to 17128. [2021-11-07 01:30:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17128 states, 17118 states have (on average 1.8903493398761537) internal successors, (32359), 17127 states have internal predecessors, (32359), 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 01:30:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17128 states to 17128 states and 32359 transitions. [2021-11-07 01:30:00,951 INFO L78 Accepts]: Start accepts. Automaton has 17128 states and 32359 transitions. Word has length 41 [2021-11-07 01:30:00,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:00,951 INFO L470 AbstractCegarLoop]: Abstraction has 17128 states and 32359 transitions. [2021-11-07 01:30:00,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 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 01:30:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 17128 states and 32359 transitions. [2021-11-07 01:30:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-07 01:30:00,956 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:00,956 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] [2021-11-07 01:30:00,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 01:30:01,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:01,174 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:30:01,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:01,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1543725899, now seen corresponding path program 1 times [2021-11-07 01:30:01,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:01,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894755490] [2021-11-07 01:30:01,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:01,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:01,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:01,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:01,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 01:30:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:01,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:30:01,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:01,676 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 01:30:01,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:01,791 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 01:30:01,791 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:01,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894755490] [2021-11-07 01:30:01,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894755490] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:01,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:01,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:30:01,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871101146] [2021-11-07 01:30:01,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:30:01,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:30:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:30:01,794 INFO L87 Difference]: Start difference. First operand 17128 states and 32359 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:06,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:06,921 INFO L93 Difference]: Finished difference Result 119277 states and 225344 transitions. [2021-11-07 01:30:06,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:30:06,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-07 01:30:06,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:07,272 INFO L225 Difference]: With dead ends: 119277 [2021-11-07 01:30:07,273 INFO L226 Difference]: Without dead ends: 102168 [2021-11-07 01:30:07,307 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:30:07,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102168 states. [2021-11-07 01:30:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102168 to 17117. [2021-11-07 01:30:08,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17117 states, 17107 states have (on average 1.889226632372713) internal successors, (32319), 17116 states have internal predecessors, (32319), 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 01:30:08,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17117 states to 17117 states and 32319 transitions. [2021-11-07 01:30:08,783 INFO L78 Accepts]: Start accepts. Automaton has 17117 states and 32319 transitions. Word has length 43 [2021-11-07 01:30:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:08,784 INFO L470 AbstractCegarLoop]: Abstraction has 17117 states and 32319 transitions. [2021-11-07 01:30:08,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:30:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 17117 states and 32319 transitions. [2021-11-07 01:30:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:30:08,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:08,791 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] [2021-11-07 01:30:08,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:09,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:09,006 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:30:09,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:09,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1473337140, now seen corresponding path program 1 times [2021-11-07 01:30:09,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:09,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841163331] [2021-11-07 01:30:09,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:09,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:09,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:09,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:09,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 01:30:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:09,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 01:30:09,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:09,587 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 01:30:09,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:09,727 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 01:30:09,727 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:09,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841163331] [2021-11-07 01:30:09,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841163331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:09,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:09,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:30:09,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020509543] [2021-11-07 01:30:09,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:30:09,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:09,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:30:09,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:30:09,730 INFO L87 Difference]: Start difference. First operand 17117 states and 32319 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 01:30:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:11,416 INFO L93 Difference]: Finished difference Result 58045 states and 109625 transitions. [2021-11-07 01:30:11,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:30:11,416 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 48 [2021-11-07 01:30:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:11,499 INFO L225 Difference]: With dead ends: 58045 [2021-11-07 01:30:11,499 INFO L226 Difference]: Without dead ends: 40943 [2021-11-07 01:30:11,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:30:11,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40943 states. [2021-11-07 01:30:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40943 to 17113. [2021-11-07 01:30:12,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17113 states, 17103 states have (on average 1.8887914400982284) internal successors, (32304), 17112 states have internal predecessors, (32304), 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 01:30:12,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17113 states to 17113 states and 32304 transitions. [2021-11-07 01:30:12,359 INFO L78 Accepts]: Start accepts. Automaton has 17113 states and 32304 transitions. Word has length 48 [2021-11-07 01:30:12,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:12,359 INFO L470 AbstractCegarLoop]: Abstraction has 17113 states and 32304 transitions. [2021-11-07 01:30:12,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 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 01:30:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand 17113 states and 32304 transitions. [2021-11-07 01:30:12,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:30:12,362 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:12,363 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] [2021-11-07 01:30:12,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:12,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:12,578 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:30:12,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:12,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1650679908, now seen corresponding path program 1 times [2021-11-07 01:30:12,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:12,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1084085898] [2021-11-07 01:30:12,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:12,580 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:12,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:12,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:12,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 01:30:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:12,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:30:12,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:13,140 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 01:30:13,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:13,316 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 01:30:13,317 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:13,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1084085898] [2021-11-07 01:30:13,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1084085898] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:13,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:13,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-07 01:30:13,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499176696] [2021-11-07 01:30:13,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:30:13,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:30:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:30:13,319 INFO L87 Difference]: Start difference. First operand 17113 states and 32304 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 01:30:22,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:22,844 INFO L93 Difference]: Finished difference Result 187361 states and 353913 transitions. [2021-11-07 01:30:22,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:30:22,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 50 [2021-11-07 01:30:22,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:23,167 INFO L225 Difference]: With dead ends: 187361 [2021-11-07 01:30:23,167 INFO L226 Difference]: Without dead ends: 170268 [2021-11-07 01:30:23,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:30:23,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170268 states. [2021-11-07 01:30:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170268 to 17126. [2021-11-07 01:30:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17126 states, 17116 states have (on average 1.8878242580042066) internal successors, (32312), 17125 states have internal predecessors, (32312), 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 01:30:25,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17126 states to 17126 states and 32312 transitions. [2021-11-07 01:30:25,087 INFO L78 Accepts]: Start accepts. Automaton has 17126 states and 32312 transitions. Word has length 50 [2021-11-07 01:30:25,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:30:25,087 INFO L470 AbstractCegarLoop]: Abstraction has 17126 states and 32312 transitions. [2021-11-07 01:30:25,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 01:30:25,088 INFO L276 IsEmpty]: Start isEmpty. Operand 17126 states and 32312 transitions. [2021-11-07 01:30:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-07 01:30:25,091 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:30:25,091 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] [2021-11-07 01:30:25,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:30:25,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:30:25,309 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 01:30:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:30:25,310 INFO L85 PathProgramCache]: Analyzing trace with hash 389816867, now seen corresponding path program 1 times [2021-11-07 01:30:25,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:30:25,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770192062] [2021-11-07 01:30:25,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:30:25,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:30:25,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:30:25,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:30:25,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fb92c61-7754-4e44-bcc7-4dc736502591/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 01:30:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:30:25,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:30:25,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:30:25,871 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 01:30:25,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:30:26,024 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 01:30:26,024 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:30:26,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770192062] [2021-11-07 01:30:26,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770192062] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:30:26,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:30:26,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 01:30:26,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828480923] [2021-11-07 01:30:26,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:30:26,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:30:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:30:26,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:30:26,027 INFO L87 Difference]: Start difference. First operand 17126 states and 32312 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 01:30:31,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:30:31,089 INFO L93 Difference]: Finished difference Result 119263 states and 225224 transitions. [2021-11-07 01:30:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:30:31,089 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 54 [2021-11-07 01:30:31,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:30:31,273 INFO L225 Difference]: With dead ends: 119263 [2021-11-07 01:30:31,273 INFO L226 Difference]: Without dead ends: 102189 [2021-11-07 01:30:31,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:30:31,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102189 states.