./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF --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 a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:39:09,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:39:09,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:39:09,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:39:09,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:39:09,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:39:09,299 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:39:09,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:39:09,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:39:09,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:39:09,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:39:09,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:39:09,317 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:39:09,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:39:09,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:39:09,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:39:09,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:39:09,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:39:09,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:39:09,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:39:09,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:39:09,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:39:09,350 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:39:09,351 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:39:09,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:39:09,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:39:09,359 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:39:09,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:39:09,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:39:09,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:39:09,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:39:09,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:39:09,366 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:39:09,367 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:39:09,369 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:39:09,369 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:39:09,370 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:39:09,370 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:39:09,370 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:39:09,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:39:09,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:39:09,374 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:39:09,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:39:09,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:39:09,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:39:09,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:39:09,425 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:39:09,425 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:39:09,426 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:39:09,426 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:39:09,432 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:39:09,432 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:39:09,434 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:39:09,434 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:39:09,434 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:39:09,434 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:39:09,435 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:39:09,435 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:39:09,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:39:09,436 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:39:09,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:39:09,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:39:09,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:39:09,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:39:09,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:39:09,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:39:09,437 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:39:09,437 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:39:09,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:39:09,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:39:09,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:39:09,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:39:09,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:39:09,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:39:09,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:39:09,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:39:09,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:39:09,442 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:39:09,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:39:09,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:39:09,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:39:09,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:39:09,443 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_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2021-11-13 02:39:09,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:39:09,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:39:09,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:39:09,721 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:39:09,722 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:39:09,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-13 02:39:09,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data/968015f5c/9694db0ed95d4fea80d04d0b87c5e303/FLAG7ee9776f8 [2021-11-13 02:39:10,423 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:39:10,423 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-13 02:39:10,448 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data/968015f5c/9694db0ed95d4fea80d04d0b87c5e303/FLAG7ee9776f8 [2021-11-13 02:39:10,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data/968015f5c/9694db0ed95d4fea80d04d0b87c5e303 [2021-11-13 02:39:10,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:39:10,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:39:10,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:10,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:39:10,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:39:10,664 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:10" (1/1) ... [2021-11-13 02:39:10,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2866fbc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:10, skipping insertion in model container [2021-11-13 02:39:10,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:10" (1/1) ... [2021-11-13 02:39:10,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:39:10,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:39:11,021 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_e878b6da-281b-4084-a485-66f209cb81ed/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-13 02:39:11,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:39:11,344 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) [2021-11-13 02:39:11,345 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@237bda8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:11, skipping insertion in model container [2021-11-13 02:39:11,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:11,345 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 02:39:11,348 INFO L158 Benchmark]: Toolchain (without parser) took 696.27ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 60.8MB in the end (delta: 4.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:39:11,349 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 53.6MB in the beginning and 53.5MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 02:39:11,350 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.63ms. Allocated memory is still 100.7MB. Free memory was 64.8MB in the beginning and 60.8MB in the end (delta: 4.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-13 02:39:11,352 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 100.7MB. Free memory was 53.6MB in the beginning and 53.5MB in the end (delta: 49.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.63ms. Allocated memory is still 100.7MB. Free memory was 64.8MB in the beginning and 60.8MB in the end (delta: 4.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2314]: 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_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF --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 a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:39:13,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:39:13,635 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:39:13,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:39:13,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:39:13,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:39:13,687 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:39:13,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:39:13,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:39:13,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:39:13,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:39:13,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:39:13,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:39:13,697 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:39:13,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:39:13,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:39:13,701 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:39:13,702 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:39:13,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:39:13,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:39:13,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:39:13,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:39:13,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:39:13,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:39:13,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:39:13,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:39:13,717 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:39:13,718 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:39:13,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:39:13,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:39:13,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:39:13,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:39:13,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:39:13,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:39:13,725 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:39:13,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:39:13,726 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:39:13,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:39:13,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:39:13,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:39:13,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:39:13,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-13 02:39:13,755 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:39:13,756 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:39:13,757 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:39:13,757 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:39:13,757 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:39:13,757 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:39:13,758 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:39:13,758 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:39:13,758 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:39:13,758 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:39:13,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:39:13,759 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:39:13,759 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:39:13,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:39:13,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:39:13,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:39:13,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:39:13,761 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:39:13,761 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 02:39:13,761 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 02:39:13,761 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:39:13,761 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:39:13,762 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:39:13,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:39:13,762 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:39:13,762 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 02:39:13,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:39:13,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:39:13,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:39:13,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:39:13,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:39:13,764 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 02:39:13,764 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 02:39:13,764 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:39:13,764 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:39:13,765 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:39:13,765 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_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a9d4bfafe2ee2b10c7451875462462bdbc63aaee25e1868c3faa4756fb5ebfc5 [2021-11-13 02:39:14,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:39:14,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:39:14,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:39:14,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:39:14,159 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:39:14,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-13 02:39:14,234 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data/02404cff3/132ec9bf0672466995d59e0daeef03e8/FLAG6815e332c [2021-11-13 02:39:14,837 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:39:14,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c [2021-11-13 02:39:14,867 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data/02404cff3/132ec9bf0672466995d59e0daeef03e8/FLAG6815e332c [2021-11-13 02:39:15,057 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/data/02404cff3/132ec9bf0672466995d59e0daeef03e8 [2021-11-13 02:39:15,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:39:15,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:39:15,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:15,067 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:39:15,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:39:15,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:15" (1/1) ... [2021-11-13 02:39:15,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17143d18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:15, skipping insertion in model container [2021-11-13 02:39:15,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:39:15" (1/1) ... [2021-11-13 02:39:15,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:39:15,197 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:39:15,527 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_e878b6da-281b-4084-a485-66f209cb81ed/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-13 02:39:15,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:39:15,813 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 02:39:15,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:39:15,900 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_e878b6da-281b-4084-a485-66f209cb81ed/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-13 02:39:15,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:39:15,990 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:39:16,016 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_e878b6da-281b-4084-a485-66f209cb81ed/sv-benchmarks/c/product-lines/elevator_spec2_product29.cil.c[17414,17427] [2021-11-13 02:39:16,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:39:16,148 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:39:16,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16 WrapperNode [2021-11-13 02:39:16,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:39:16,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:39:16,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:39:16,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:39:16,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:39:16,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:39:16,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:39:16,308 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:39:16,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,422 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:39:16,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:39:16,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:39:16,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:39:16,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (1/1) ... [2021-11-13 02:39:16,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:39:16,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:39:16,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:39:16,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:39:16,538 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-13 02:39:16,538 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-13 02:39:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-13 02:39:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-13 02:39:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:39:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-13 02:39:16,539 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-13 02:39:16,539 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-13 02:39:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-13 02:39:16,540 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-13 02:39:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-13 02:39:16,540 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-11-13 02:39:16,540 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-11-13 02:39:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-13 02:39:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-13 02:39:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-13 02:39:16,541 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-13 02:39:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-13 02:39:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-13 02:39:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-13 02:39:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-13 02:39:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-13 02:39:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-13 02:39:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-13 02:39:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-13 02:39:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-13 02:39:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-13 02:39:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 02:39:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-13 02:39:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-13 02:39:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-13 02:39:16,544 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-13 02:39:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-13 02:39:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-13 02:39:16,545 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-13 02:39:16,545 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-13 02:39:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-13 02:39:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-13 02:39:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-13 02:39:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-13 02:39:16,546 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-13 02:39:16,546 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-13 02:39:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-13 02:39:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-13 02:39:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-13 02:39:16,547 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-13 02:39:16,547 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-13 02:39:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-13 02:39:16,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:39:16,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:39:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-13 02:39:16,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-13 02:39:20,503 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:39:20,504 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 02:39:20,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:39:20 BoogieIcfgContainer [2021-11-13 02:39:20,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:39:20,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:39:20,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:39:20,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:39:20,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:39:15" (1/3) ... [2021-11-13 02:39:20,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfce0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:39:20, skipping insertion in model container [2021-11-13 02:39:20,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:39:16" (2/3) ... [2021-11-13 02:39:20,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dfce0e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:39:20, skipping insertion in model container [2021-11-13 02:39:20,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:39:20" (3/3) ... [2021-11-13 02:39:20,518 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product29.cil.c [2021-11-13 02:39:20,527 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:39:20,527 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 02:39:20,598 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:39:20,611 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 [2021-11-13 02:39:20,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 02:39:20,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 451 states have (on average 1.6962305986696231) internal successors, (765), 472 states have internal predecessors, (765), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2021-11-13 02:39:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-13 02:39:20,681 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:20,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:20,682 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:20,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:20,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2058097453, now seen corresponding path program 1 times [2021-11-13 02:39:20,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:20,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295175629] [2021-11-13 02:39:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:20,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:20,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:20,712 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:20,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 02:39:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:21,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 02:39:21,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:21,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:21,883 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:21,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295175629] [2021-11-13 02:39:21,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295175629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:21,885 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:21,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 02:39:21,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807921602] [2021-11-13 02:39:21,888 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:21,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 02:39:21,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:21,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 02:39:21,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:39:21,937 INFO L87 Difference]: Start difference. First operand has 572 states, 451 states have (on average 1.6962305986696231) internal successors, (765), 472 states have internal predecessors, (765), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 02:39:22,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:22,026 INFO L93 Difference]: Finished difference Result 593 states and 985 transitions. [2021-11-13 02:39:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 02:39:22,031 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 88 [2021-11-13 02:39:22,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:22,071 INFO L225 Difference]: With dead ends: 593 [2021-11-13 02:39:22,072 INFO L226 Difference]: Without dead ends: 564 [2021-11-13 02:39:22,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 02:39:22,083 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:22,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 9.92ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 02:39:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-13 02:39:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2021-11-13 02:39:22,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 445 states have (on average 1.6943820224719102) internal successors, (754), 464 states have internal predecessors, (754), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-13 02:39:22,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 939 transitions. [2021-11-13 02:39:22,232 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 939 transitions. Word has length 88 [2021-11-13 02:39:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:22,235 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 939 transitions. [2021-11-13 02:39:22,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.5) internal successors, (67), 2 states have internal predecessors, (67), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-13 02:39:22,241 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 939 transitions. [2021-11-13 02:39:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-13 02:39:22,251 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:22,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:22,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:22,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:22,466 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:22,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:22,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1168063617, now seen corresponding path program 1 times [2021-11-13 02:39:22,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:22,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127841245] [2021-11-13 02:39:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:22,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:22,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:22,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:22,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 02:39:22,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:23,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:39:23,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:23,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:23,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:23,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:23,581 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:23,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [127841245] [2021-11-13 02:39:23,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [127841245] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:23,581 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:23,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:39:23,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024541456] [2021-11-13 02:39:23,582 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:23,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:39:23,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:39:23,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:23,585 INFO L87 Difference]: Start difference. First operand 564 states and 939 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 02:39:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:23,758 INFO L93 Difference]: Finished difference Result 1112 states and 1856 transitions. [2021-11-13 02:39:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:39:23,759 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 90 [2021-11-13 02:39:23,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:23,767 INFO L225 Difference]: With dead ends: 1112 [2021-11-13 02:39:23,767 INFO L226 Difference]: Without dead ends: 564 [2021-11-13 02:39:23,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:23,777 INFO L933 BasicCegarLoop]: 926 mSDtfsCounter, 15 mSDsluCounter, 3694 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4620 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.11ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.81ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:23,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 4620 Invalid, 45 Unknown, 0 Unchecked, 26.11ms Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 46.81ms Time] [2021-11-13 02:39:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-13 02:39:23,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2021-11-13 02:39:23,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 445 states have (on average 1.6808988764044943) internal successors, (748), 464 states have internal predecessors, (748), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-13 02:39:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 933 transitions. [2021-11-13 02:39:23,833 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 933 transitions. Word has length 90 [2021-11-13 02:39:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:23,835 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 933 transitions. [2021-11-13 02:39:23,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-13 02:39:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 933 transitions. [2021-11-13 02:39:23,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-13 02:39:23,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:23,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:23,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:24,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:24,056 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:24,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:24,057 INFO L85 PathProgramCache]: Analyzing trace with hash 701762538, now seen corresponding path program 1 times [2021-11-13 02:39:24,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:24,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1857298224] [2021-11-13 02:39:24,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:24,058 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:24,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:24,061 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:24,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 02:39:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:24,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:39:24,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:24,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:25,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:25,250 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:25,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1857298224] [2021-11-13 02:39:25,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1857298224] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:25,251 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:25,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2021-11-13 02:39:25,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976031113] [2021-11-13 02:39:25,251 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:25,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:39:25,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:39:25,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:39:25,253 INFO L87 Difference]: Start difference. First operand 564 states and 933 transitions. Second operand has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-13 02:39:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:25,465 INFO L93 Difference]: Finished difference Result 1070 states and 1773 transitions. [2021-11-13 02:39:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:39:25,467 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 95 [2021-11-13 02:39:25,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:25,475 INFO L225 Difference]: With dead ends: 1070 [2021-11-13 02:39:25,475 INFO L226 Difference]: Without dead ends: 558 [2021-11-13 02:39:25,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:39:25,483 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 118 mSDsluCounter, 6272 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 94.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 7192 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.91ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:25,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 7192 Invalid, 85 Unknown, 0 Unchecked, 23.00ms Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 107.91ms Time] [2021-11-13 02:39:25,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-13 02:39:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-11-13 02:39:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 439 states have (on average 1.674259681093394) internal successors, (735), 458 states have internal predecessors, (735), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-13 02:39:25,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 920 transitions. [2021-11-13 02:39:25,531 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 920 transitions. Word has length 95 [2021-11-13 02:39:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:25,531 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 920 transitions. [2021-11-13 02:39:25,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 13.777777777777779) internal successors, (124), 9 states have internal predecessors, (124), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-13 02:39:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 920 transitions. [2021-11-13 02:39:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-13 02:39:25,541 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:25,541 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:25,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:25,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:25,759 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:25,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:25,760 INFO L85 PathProgramCache]: Analyzing trace with hash 479775754, now seen corresponding path program 1 times [2021-11-13 02:39:25,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:25,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299299440] [2021-11-13 02:39:25,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:25,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:25,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:25,762 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:25,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 02:39:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:26,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:39:26,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:26,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:26,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:26,742 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:26,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299299440] [2021-11-13 02:39:26,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299299440] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:26,743 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:26,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 02:39:26,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852948093] [2021-11-13 02:39:26,744 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:26,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:39:26,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:26,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:39:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 02:39:26,746 INFO L87 Difference]: Start difference. First operand 558 states and 920 transitions. Second operand has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 02:39:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:26,954 INFO L93 Difference]: Finished difference Result 1073 states and 1774 transitions. [2021-11-13 02:39:26,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:39:26,955 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 96 [2021-11-13 02:39:26,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:26,961 INFO L225 Difference]: With dead ends: 1073 [2021-11-13 02:39:26,961 INFO L226 Difference]: Without dead ends: 558 [2021-11-13 02:39:26,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:26,965 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 112 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.21ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.20ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:26,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 3456 Invalid, 148 Unknown, 0 Unchecked, 9.21ms Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 141.20ms Time] [2021-11-13 02:39:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-11-13 02:39:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2021-11-13 02:39:26,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 439 states have (on average 1.6195899772209568) internal successors, (711), 458 states have internal predecessors, (711), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-13 02:39:27,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 896 transitions. [2021-11-13 02:39:27,002 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 896 transitions. Word has length 96 [2021-11-13 02:39:27,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:27,003 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 896 transitions. [2021-11-13 02:39:27,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.333333333333332) internal successors, (128), 6 states have internal predecessors, (128), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-13 02:39:27,003 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 896 transitions. [2021-11-13 02:39:27,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-13 02:39:27,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:27,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:27,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:27,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:27,228 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:27,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:27,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1790093615, now seen corresponding path program 1 times [2021-11-13 02:39:27,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:27,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846804063] [2021-11-13 02:39:27,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:27,229 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:27,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:27,231 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:27,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 02:39:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:27,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 02:39:27,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:28,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:28,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:28,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:28,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846804063] [2021-11-13 02:39:28,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846804063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:28,381 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:28,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 8 [2021-11-13 02:39:28,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005992157] [2021-11-13 02:39:28,381 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:28,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:39:28,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:28,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:39:28,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:39:28,383 INFO L87 Difference]: Start difference. First operand 558 states and 896 transitions. Second operand has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-13 02:39:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:28,543 INFO L93 Difference]: Finished difference Result 1064 states and 1736 transitions. [2021-11-13 02:39:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:39:28,544 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 98 [2021-11-13 02:39:28,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:28,550 INFO L225 Difference]: With dead ends: 1064 [2021-11-13 02:39:28,550 INFO L226 Difference]: Without dead ends: 537 [2021-11-13 02:39:28,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:39:28,555 INFO L933 BasicCegarLoop]: 884 mSDtfsCounter, 147 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.05ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.36ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:28,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 4395 Invalid, 54 Unknown, 0 Unchecked, 31.05ms Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 75.36ms Time] [2021-11-13 02:39:28,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-13 02:39:28,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2021-11-13 02:39:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 418 states have (on average 1.6411483253588517) internal successors, (686), 437 states have internal predecessors, (686), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-13 02:39:28,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 871 transitions. [2021-11-13 02:39:28,585 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 871 transitions. Word has length 98 [2021-11-13 02:39:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:28,587 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 871 transitions. [2021-11-13 02:39:28,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 3 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-13 02:39:28,587 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 871 transitions. [2021-11-13 02:39:28,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-13 02:39:28,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:28,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:28,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 02:39:28,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:28,818 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:28,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:28,818 INFO L85 PathProgramCache]: Analyzing trace with hash -110194921, now seen corresponding path program 1 times [2021-11-13 02:39:28,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:28,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283971527] [2021-11-13 02:39:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:28,819 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:28,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:28,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:28,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 02:39:29,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:29,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:39:29,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:29,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:29,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:30,052 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:30,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283971527] [2021-11-13 02:39:30,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283971527] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:30,052 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:30,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-13 02:39:30,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126257227] [2021-11-13 02:39:30,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:30,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 02:39:30,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 02:39:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-13 02:39:30,054 INFO L87 Difference]: Start difference. First operand 537 states and 871 transitions. Second operand has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-13 02:39:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:30,270 INFO L93 Difference]: Finished difference Result 1037 states and 1700 transitions. [2021-11-13 02:39:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:39:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 101 [2021-11-13 02:39:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:30,276 INFO L225 Difference]: With dead ends: 1037 [2021-11-13 02:39:30,277 INFO L226 Difference]: Without dead ends: 537 [2021-11-13 02:39:30,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-13 02:39:30,284 INFO L933 BasicCegarLoop]: 856 mSDtfsCounter, 30 mSDsluCounter, 7667 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 108.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8523 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.16ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.14ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:30,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 8523 Invalid, 107 Unknown, 0 Unchecked, 16.16ms Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 122.14ms Time] [2021-11-13 02:39:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-13 02:39:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2021-11-13 02:39:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 418 states have (on average 1.638755980861244) internal successors, (685), 437 states have internal predecessors, (685), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2021-11-13 02:39:30,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 870 transitions. [2021-11-13 02:39:30,308 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 870 transitions. Word has length 101 [2021-11-13 02:39:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:30,309 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 870 transitions. [2021-11-13 02:39:30,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 12.636363636363637) internal successors, (139), 11 states have internal predecessors, (139), 4 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2021-11-13 02:39:30,309 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 870 transitions. [2021-11-13 02:39:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-13 02:39:30,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:30,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:30,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:30,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:30,530 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:30,530 INFO L85 PathProgramCache]: Analyzing trace with hash -620474679, now seen corresponding path program 1 times [2021-11-13 02:39:30,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:30,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203643428] [2021-11-13 02:39:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:30,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:30,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:30,531 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:30,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 02:39:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:30,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-13 02:39:30,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:31,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:32,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:32,271 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:32,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203643428] [2021-11-13 02:39:32,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203643428] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:32,271 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:32,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-13 02:39:32,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468894733] [2021-11-13 02:39:32,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:32,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 02:39:32,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:32,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 02:39:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:39:32,273 INFO L87 Difference]: Start difference. First operand 537 states and 870 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2021-11-13 02:39:34,299 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:36,305 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:38,312 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:40,317 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:45,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:45,124 INFO L93 Difference]: Finished difference Result 1168 states and 1946 transitions. [2021-11-13 02:39:45,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 02:39:45,125 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) Word has length 102 [2021-11-13 02:39:45,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:45,131 INFO L225 Difference]: With dead ends: 1168 [2021-11-13 02:39:45,131 INFO L226 Difference]: Without dead ends: 676 [2021-11-13 02:39:45,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-11-13 02:39:45,135 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 1464 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 4168 mSolverCounterSat, 564 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11950.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 4736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.47ms SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 4168 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12623.07ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:45,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1464 Valid, 3190 Invalid, 4736 Unknown, 0 Unchecked, 31.47ms Time], IncrementalHoareTripleChecker [564 Valid, 4168 Invalid, 4 Unknown, 0 Unchecked, 12623.07ms Time] [2021-11-13 02:39:45,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2021-11-13 02:39:45,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 541. [2021-11-13 02:39:45,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 421 states have (on average 1.6342042755344417) internal successors, (688), 440 states have internal predecessors, (688), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (106), 89 states have call predecessors, (106), 90 states have call successors, (106) [2021-11-13 02:39:45,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 889 transitions. [2021-11-13 02:39:45,179 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 889 transitions. Word has length 102 [2021-11-13 02:39:45,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:45,180 INFO L470 AbstractCegarLoop]: Abstraction has 541 states and 889 transitions. [2021-11-13 02:39:45,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 12 states have internal predecessors, (142), 8 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (20), 10 states have call predecessors, (20), 7 states have call successors, (20) [2021-11-13 02:39:45,180 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 889 transitions. [2021-11-13 02:39:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-13 02:39:45,186 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:45,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:45,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:45,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:45,402 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:45,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:45,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2088900271, now seen corresponding path program 1 times [2021-11-13 02:39:45,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:45,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406280629] [2021-11-13 02:39:45,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:45,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:45,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:45,404 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:45,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 02:39:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:45,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:39:45,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:46,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:46,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:39:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:39:46,731 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:39:46,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406280629] [2021-11-13 02:39:46,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406280629] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:39:46,731 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:39:46,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-11-13 02:39:46,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627458181] [2021-11-13 02:39:46,731 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:39:46,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 02:39:46,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:39:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 02:39:46,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:39:46,733 INFO L87 Difference]: Start difference. First operand 541 states and 889 transitions. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-13 02:39:48,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:50,772 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:39:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:39:56,543 INFO L93 Difference]: Finished difference Result 1983 states and 3383 transitions. [2021-11-13 02:39:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 02:39:56,551 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) Word has length 103 [2021-11-13 02:39:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:39:56,565 INFO L225 Difference]: With dead ends: 1983 [2021-11-13 02:39:56,565 INFO L226 Difference]: Without dead ends: 1487 [2021-11-13 02:39:56,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2021-11-13 02:39:56,571 INFO L933 BasicCegarLoop]: 1463 mSDtfsCounter, 3699 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 4091 mSolverCounterSat, 1063 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8552.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3783 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 5156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.05ms SdHoareTripleChecker+Time, 1063 IncrementalHoareTripleChecker+Valid, 4091 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9429.11ms IncrementalHoareTripleChecker+Time [2021-11-13 02:39:56,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3783 Valid, 3138 Invalid, 5156 Unknown, 0 Unchecked, 36.05ms Time], IncrementalHoareTripleChecker [1063 Valid, 4091 Invalid, 2 Unknown, 0 Unchecked, 9429.11ms Time] [2021-11-13 02:39:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2021-11-13 02:39:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1398. [2021-11-13 02:39:56,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1398 states, 1084 states have (on average 1.646678966789668) internal successors, (1785), 1132 states have internal predecessors, (1785), 249 states have call successors, (249), 63 states have call predecessors, (249), 64 states have return successors, (273), 239 states have call predecessors, (273), 244 states have call successors, (273) [2021-11-13 02:39:56,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1398 states to 1398 states and 2307 transitions. [2021-11-13 02:39:56,665 INFO L78 Accepts]: Start accepts. Automaton has 1398 states and 2307 transitions. Word has length 103 [2021-11-13 02:39:56,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:39:56,666 INFO L470 AbstractCegarLoop]: Abstraction has 1398 states and 2307 transitions. [2021-11-13 02:39:56,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 states have internal predecessors, (114), 6 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 5 states have call successors, (15) [2021-11-13 02:39:56,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1398 states and 2307 transitions. [2021-11-13 02:39:56,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-13 02:39:56,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:39:56,670 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:39:56,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:39:56,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:39:56,884 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:39:56,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:39:56,885 INFO L85 PathProgramCache]: Analyzing trace with hash -481112270, now seen corresponding path program 1 times [2021-11-13 02:39:56,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:39:56,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542748363] [2021-11-13 02:39:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:39:56,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:39:56,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:39:56,887 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:39:56,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 02:39:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:39:57,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 814 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:39:57,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:39:59,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:39:59,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:03,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 02:40:03,477 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:03,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542748363] [2021-11-13 02:40:03,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542748363] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:03,477 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:03,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-13 02:40:03,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575714525] [2021-11-13 02:40:03,477 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:03,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 02:40:03,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:03,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 02:40:03,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:40:03,479 INFO L87 Difference]: Start difference. First operand 1398 states and 2307 transitions. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-13 02:40:05,506 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:07,512 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:09,517 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:11,523 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:34,920 INFO L93 Difference]: Finished difference Result 4701 states and 7890 transitions. [2021-11-13 02:40:34,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:40:34,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) Word has length 105 [2021-11-13 02:40:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:34,958 INFO L225 Difference]: With dead ends: 4701 [2021-11-13 02:40:34,958 INFO L226 Difference]: Without dead ends: 3348 [2021-11-13 02:40:34,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:40:34,997 INFO L933 BasicCegarLoop]: 1043 mSDtfsCounter, 2401 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 5404 mSolverCounterSat, 623 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26711.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2472 SdHoareTripleChecker+Valid, 3377 SdHoareTripleChecker+Invalid, 6031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.80ms SdHoareTripleChecker+Time, 623 IncrementalHoareTripleChecker+Valid, 5404 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30762.10ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:34,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2472 Valid, 3377 Invalid, 6031 Unknown, 0 Unchecked, 48.80ms Time], IncrementalHoareTripleChecker [623 Valid, 5404 Invalid, 4 Unknown, 0 Unchecked, 30762.10ms Time] [2021-11-13 02:40:35,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3348 states. [2021-11-13 02:40:35,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3348 to 2930. [2021-11-13 02:40:35,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2239 states have (on average 1.6485037963376508) internal successors, (3691), 2337 states have internal predecessors, (3691), 574 states have call successors, (574), 111 states have call predecessors, (574), 116 states have return successors, (631), 540 states have call predecessors, (631), 569 states have call successors, (631) [2021-11-13 02:40:35,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4896 transitions. [2021-11-13 02:40:35,204 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4896 transitions. Word has length 105 [2021-11-13 02:40:35,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:35,204 INFO L470 AbstractCegarLoop]: Abstraction has 2930 states and 4896 transitions. [2021-11-13 02:40:35,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 11 states have internal predecessors, (157), 9 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 7 states have call predecessors, (22), 8 states have call successors, (22) [2021-11-13 02:40:35,205 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4896 transitions. [2021-11-13 02:40:35,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-13 02:40:35,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:35,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:35,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:35,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:35,431 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash 414569373, now seen corresponding path program 1 times [2021-11-13 02:40:35,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:35,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180557] [2021-11-13 02:40:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:35,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:35,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:35,433 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:35,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 02:40:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:35,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 820 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-13 02:40:35,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:36,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:36,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:36,976 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:36,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180557] [2021-11-13 02:40:36,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180557] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:36,977 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:36,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [] total 14 [2021-11-13 02:40:36,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25263125] [2021-11-13 02:40:36,977 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:36,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-13 02:40:36,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:36,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-13 02:40:36,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-13 02:40:36,979 INFO L87 Difference]: Start difference. First operand 2930 states and 4896 transitions. Second operand has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:40:39,018 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:41,024 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:40:53,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:40:53,596 INFO L93 Difference]: Finished difference Result 11199 states and 19329 transitions. [2021-11-13 02:40:53,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 02:40:53,598 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) Word has length 109 [2021-11-13 02:40:53,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:40:53,681 INFO L225 Difference]: With dead ends: 11199 [2021-11-13 02:40:53,681 INFO L226 Difference]: Without dead ends: 8314 [2021-11-13 02:40:53,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=457, Unknown=0, NotChecked=0, Total=600 [2021-11-13 02:40:53,710 INFO L933 BasicCegarLoop]: 1931 mSDtfsCounter, 5452 mSDsluCounter, 3585 mSDsCounter, 0 mSdLazyCounter, 8059 mSolverCounterSat, 2519 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14137.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5559 SdHoareTripleChecker+Valid, 5516 SdHoareTripleChecker+Invalid, 10580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.90ms SdHoareTripleChecker+Time, 2519 IncrementalHoareTripleChecker+Valid, 8059 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15682.64ms IncrementalHoareTripleChecker+Time [2021-11-13 02:40:53,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5559 Valid, 5516 Invalid, 10580 Unknown, 0 Unchecked, 68.90ms Time], IncrementalHoareTripleChecker [2519 Valid, 8059 Invalid, 2 Unknown, 0 Unchecked, 15682.64ms Time] [2021-11-13 02:40:53,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8314 states. [2021-11-13 02:40:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8314 to 5004. [2021-11-13 02:40:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3693 states have (on average 1.6301110208502572) internal successors, (6020), 3901 states have internal predecessors, (6020), 1111 states have call successors, (1111), 169 states have call predecessors, (1111), 199 states have return successors, (1292), 1087 states have call predecessors, (1292), 1106 states have call successors, (1292) [2021-11-13 02:40:54,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 8423 transitions. [2021-11-13 02:40:54,369 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 8423 transitions. Word has length 109 [2021-11-13 02:40:54,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:40:54,370 INFO L470 AbstractCegarLoop]: Abstraction has 5004 states and 8423 transitions. [2021-11-13 02:40:54,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.214285714285714) internal successors, (157), 12 states have internal predecessors, (157), 8 states have call successors, (23), 6 states have call predecessors, (23), 7 states have return successors, (22), 10 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:40:54,370 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 8423 transitions. [2021-11-13 02:40:54,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-13 02:40:54,375 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:40:54,375 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:40:54,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:40:54,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:40:54,590 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:40:54,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:40:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1558028429, now seen corresponding path program 1 times [2021-11-13 02:40:54,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:40:54,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736424952] [2021-11-13 02:40:54,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:40:54,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:40:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:40:54,591 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:40:54,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 02:40:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:40:55,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:40:55,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:40:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:55,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:40:55,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:40:55,995 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:40:55,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736424952] [2021-11-13 02:40:55,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736424952] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:40:55,996 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:40:55,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 02:40:55,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769368286] [2021-11-13 02:40:55,997 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:40:55,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:40:55,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:40:55,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:40:55,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:40:55,999 INFO L87 Difference]: Start difference. First operand 5004 states and 8423 transitions. Second operand has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:40:58,031 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:00,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:05,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:05,639 INFO L93 Difference]: Finished difference Result 18100 states and 31380 transitions. [2021-11-13 02:41:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:41:05,641 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 110 [2021-11-13 02:41:05,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:05,756 INFO L225 Difference]: With dead ends: 18100 [2021-11-13 02:41:05,756 INFO L226 Difference]: Without dead ends: 13144 [2021-11-13 02:41:05,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:41:05,796 INFO L933 BasicCegarLoop]: 1743 mSDtfsCounter, 3653 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 1208 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7887.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3759 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 3906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.12ms SdHoareTripleChecker+Time, 1208 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8535.56ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:05,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3759 Valid, 3160 Invalid, 3906 Unknown, 0 Unchecked, 27.12ms Time], IncrementalHoareTripleChecker [1208 Valid, 2696 Invalid, 2 Unknown, 0 Unchecked, 8535.56ms Time] [2021-11-13 02:41:05,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13144 states. [2021-11-13 02:41:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13144 to 10487. [2021-11-13 02:41:06,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10487 states, 7364 states have (on average 1.6132536664856056) internal successors, (11880), 7878 states have internal predecessors, (11880), 2756 states have call successors, (2756), 285 states have call predecessors, (2756), 366 states have return successors, (3340), 2752 states have call predecessors, (3340), 2751 states have call successors, (3340) [2021-11-13 02:41:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10487 states to 10487 states and 17976 transitions. [2021-11-13 02:41:07,055 INFO L78 Accepts]: Start accepts. Automaton has 10487 states and 17976 transitions. Word has length 110 [2021-11-13 02:41:07,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:07,056 INFO L470 AbstractCegarLoop]: Abstraction has 10487 states and 17976 transitions. [2021-11-13 02:41:07,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.75) internal successors, (150), 8 states have internal predecessors, (150), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:41:07,056 INFO L276 IsEmpty]: Start isEmpty. Operand 10487 states and 17976 transitions. [2021-11-13 02:41:07,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-13 02:41:07,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:07,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:07,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:07,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:07,286 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:07,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:07,286 INFO L85 PathProgramCache]: Analyzing trace with hash -2007114976, now seen corresponding path program 1 times [2021-11-13 02:41:07,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:07,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089372832] [2021-11-13 02:41:07,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:07,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:07,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:07,288 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:07,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 02:41:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:07,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:41:07,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:08,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:08,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:08,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:08,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089372832] [2021-11-13 02:41:08,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089372832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:08,615 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:08,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 02:41:08,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255407631] [2021-11-13 02:41:08,616 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:08,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:41:08,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:08,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:41:08,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:41:08,618 INFO L87 Difference]: Start difference. First operand 10487 states and 17976 transitions. Second operand has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:41:10,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:17,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:17,587 INFO L93 Difference]: Finished difference Result 43695 states and 77333 transitions. [2021-11-13 02:41:17,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:41:17,588 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 111 [2021-11-13 02:41:17,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:17,850 INFO L225 Difference]: With dead ends: 43695 [2021-11-13 02:41:17,850 INFO L226 Difference]: Without dead ends: 33258 [2021-11-13 02:41:17,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:41:17,922 INFO L933 BasicCegarLoop]: 1751 mSDtfsCounter, 2440 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 3442 mSolverCounterSat, 845 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5858.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 4288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.93ms SdHoareTripleChecker+Time, 845 IncrementalHoareTripleChecker+Valid, 3442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6469.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:17,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2547 Valid, 3523 Invalid, 4288 Unknown, 0 Unchecked, 23.93ms Time], IncrementalHoareTripleChecker [845 Valid, 3442 Invalid, 1 Unknown, 0 Unchecked, 6469.48ms Time] [2021-11-13 02:41:17,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33258 states. [2021-11-13 02:41:20,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33258 to 26672. [2021-11-13 02:41:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26672 states, 17770 states have (on average 1.5973550928531233) internal successors, (28385), 19205 states have internal predecessors, (28385), 8149 states have call successors, (8149), 517 states have call predecessors, (8149), 752 states have return successors, (10344), 8233 states have call predecessors, (10344), 8144 states have call successors, (10344) [2021-11-13 02:41:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26672 states to 26672 states and 46878 transitions. [2021-11-13 02:41:21,058 INFO L78 Accepts]: Start accepts. Automaton has 26672 states and 46878 transitions. Word has length 111 [2021-11-13 02:41:21,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:21,058 INFO L470 AbstractCegarLoop]: Abstraction has 26672 states and 46878 transitions. [2021-11-13 02:41:21,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.875) internal successors, (151), 8 states have internal predecessors, (151), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:41:21,059 INFO L276 IsEmpty]: Start isEmpty. Operand 26672 states and 46878 transitions. [2021-11-13 02:41:21,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-13 02:41:21,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:21,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:21,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:21,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:21,286 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:21,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash -771178638, now seen corresponding path program 1 times [2021-11-13 02:41:21,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:21,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632773991] [2021-11-13 02:41:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:21,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:21,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:21,288 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:21,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 02:41:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:21,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:41:21,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:22,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:22,729 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:22,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632773991] [2021-11-13 02:41:22,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632773991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:22,729 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:22,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 02:41:22,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477947450] [2021-11-13 02:41:22,730 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:22,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:41:22,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:22,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:41:22,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:41:22,731 INFO L87 Difference]: Start difference. First operand 26672 states and 46878 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:41:24,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:26,758 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:40,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:41:40,293 INFO L93 Difference]: Finished difference Result 123970 states and 224341 transitions. [2021-11-13 02:41:40,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:41:40,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 112 [2021-11-13 02:41:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:41:41,408 INFO L225 Difference]: With dead ends: 123970 [2021-11-13 02:41:41,408 INFO L226 Difference]: Without dead ends: 97352 [2021-11-13 02:41:41,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-13 02:41:41,720 INFO L933 BasicCegarLoop]: 1759 mSDtfsCounter, 3501 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 1078 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7769.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3609 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 3783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.66ms SdHoareTripleChecker+Time, 1078 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8456.79ms IncrementalHoareTripleChecker+Time [2021-11-13 02:41:41,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3609 Valid, 3209 Invalid, 3783 Unknown, 0 Unchecked, 26.66ms Time], IncrementalHoareTripleChecker [1078 Valid, 2703 Invalid, 2 Unknown, 0 Unchecked, 8456.79ms Time] [2021-11-13 02:41:41,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97352 states. [2021-11-13 02:41:51,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97352 to 78665. [2021-11-13 02:41:51,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78665 states, 50352 states have (on average 1.58647124245313) internal successors, (79882), 54708 states have internal predecessors, (79882), 26586 states have call successors, (26586), 981 states have call predecessors, (26586), 1726 states have return successors, (35494), 27038 states have call predecessors, (35494), 26581 states have call successors, (35494) [2021-11-13 02:41:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78665 states to 78665 states and 141962 transitions. [2021-11-13 02:41:52,687 INFO L78 Accepts]: Start accepts. Automaton has 78665 states and 141962 transitions. Word has length 112 [2021-11-13 02:41:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:41:52,688 INFO L470 AbstractCegarLoop]: Abstraction has 78665 states and 141962 transitions. [2021-11-13 02:41:52,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:41:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 78665 states and 141962 transitions. [2021-11-13 02:41:52,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 02:41:52,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:41:52,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:41:52,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 02:41:52,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 02:41:52,916 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:41:52,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:41:52,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1025625627, now seen corresponding path program 1 times [2021-11-13 02:41:52,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 02:41:52,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642040044] [2021-11-13 02:41:52,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:41:52,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 02:41:52,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 02:41:52,919 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 02:41:52,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e878b6da-281b-4084-a485-66f209cb81ed/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 02:41:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:41:53,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 02:41:53,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:41:53,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:53,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:41:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:41:54,390 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 02:41:54,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642040044] [2021-11-13 02:41:54,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642040044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:41:54,391 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:41:54,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-13 02:41:54,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589475036] [2021-11-13 02:41:54,391 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:41:54,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 02:41:54,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 02:41:54,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 02:41:54,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:41:54,393 INFO L87 Difference]: Start difference. First operand 78665 states and 141962 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 8 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2021-11-13 02:41:56,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 02:41:58,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []