./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:33:47,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:33:47,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:33:47,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:33:47,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:33:47,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:33:47,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:33:47,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:33:47,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:33:47,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:33:47,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:33:47,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:33:47,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:33:47,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:33:47,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:33:47,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:33:47,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:33:47,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:33:47,426 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:33:47,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:33:47,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:33:47,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:33:47,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:33:47,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:33:47,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:33:47,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:33:47,442 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:33:47,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:33:47,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:33:47,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:33:47,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:33:47,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:33:47,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:33:47,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:33:47,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:33:47,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:33:47,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:33:47,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:33:47,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:33:47,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:33:47,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:33:47,458 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 00:33:47,488 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:33:47,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:33:47,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:33:47,489 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:33:47,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:33:47,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:33:47,491 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:33:47,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:33:47,492 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:33:47,492 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:33:47,492 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:33:47,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:33:47,493 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:33:47,493 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:33:47,494 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:33:47,494 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:33:47,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:33:47,495 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:33:47,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:33:47,496 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:33:47,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:33:47,497 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:33:47,497 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:33:47,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:33:47,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:33:47,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:33:47,499 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:33:47,499 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:33:47,499 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:33:47,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:33:47,500 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:33:47,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:33:47,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:33:47,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:33:47,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:33:47,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:33:47,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:33:47,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:33:47,503 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:33:47,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:33:47,503 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:33:47,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:33:47,504 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_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2021-11-21 00:33:47,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:33:47,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:33:47,827 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:33:47,828 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:33:47,829 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:33:47,831 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-21 00:33:47,920 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data/61911d286/19b7d0bee83b41f8bfc5fdeb0882acf3/FLAG3801d156b [2021-11-21 00:33:48,644 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:33:48,644 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-21 00:33:48,666 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data/61911d286/19b7d0bee83b41f8bfc5fdeb0882acf3/FLAG3801d156b [2021-11-21 00:33:48,806 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data/61911d286/19b7d0bee83b41f8bfc5fdeb0882acf3 [2021-11-21 00:33:48,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:33:48,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:33:48,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:33:48,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:33:48,820 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:33:48,821 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:33:48" (1/1) ... [2021-11-21 00:33:48,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe4603 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:48, skipping insertion in model container [2021-11-21 00:33:48,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:33:48" (1/1) ... [2021-11-21 00:33:48,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:33:48,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:33:49,452 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-21 00:33:49,639 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-21 00:33:49,640 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-21 00:33:49,664 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:33:49,687 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) [2021-11-21 00:33:49,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75c5a623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:49, skipping insertion in model container [2021-11-21 00:33:49,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:33:49,688 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 00:33:49,691 INFO L158 Benchmark]: Toolchain (without parser) took 880.13ms. Allocated memory is still 94.4MB. Free memory was 57.2MB in the beginning and 59.3MB in the end (delta: -2.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-21 00:33:49,693 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 66.2MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 00:33:49,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 871.32ms. Allocated memory is still 94.4MB. Free memory was 57.0MB in the beginning and 59.3MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-21 00:33:49,698 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 94.4MB. Free memory was 66.2MB in the beginning and 66.2MB in the end (delta: 28.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 871.32ms. Allocated memory is still 94.4MB. Free memory was 57.0MB in the beginning and 59.3MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: 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_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:33:52,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:33:52,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:33:52,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:33:52,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:33:52,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:33:52,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:33:52,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:33:52,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:33:52,554 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:33:52,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:33:52,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:33:52,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:33:52,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:33:52,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:33:52,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:33:52,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:33:52,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:33:52,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:33:52,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:33:52,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:33:52,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:33:52,579 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:33:52,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:33:52,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:33:52,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:33:52,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:33:52,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:33:52,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:33:52,590 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:33:52,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:33:52,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:33:52,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:33:52,594 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:33:52,595 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:33:52,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:33:52,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:33:52,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:33:52,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:33:52,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:33:52,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:33:52,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 00:33:52,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:33:52,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:33:52,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:33:52,672 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:33:52,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:33:52,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:33:52,674 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:33:52,674 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:33:52,675 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:33:52,675 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:33:52,676 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:33:52,676 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:33:52,677 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 00:33:52,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 00:33:52,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:33:52,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:33:52,679 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:33:52,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:33:52,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:33:52,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:33:52,680 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 00:33:52,680 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 00:33:52,681 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 00:33:52,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:33:52,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 00:33:52,682 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 00:33:52,682 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 00:33:52,682 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:33:52,683 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:33:52,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:33:52,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 00:33:52,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:33:52,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:33:52,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:33:52,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:33:52,685 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 00:33:52,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 00:33:52,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:33:52,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:33:52,686 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_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a24617e0b83f023304780397185eef703cdbd26842fbad821fea93a0f1f12f [2021-11-21 00:33:53,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:33:53,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:33:53,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:33:53,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:33:53,147 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:33:53,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-21 00:33:53,235 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data/2065cb497/97d96d43a495414c8bfa56e727ebd054/FLAG51d0fdcbe [2021-11-21 00:33:54,080 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:33:54,081 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i [2021-11-21 00:33:54,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data/2065cb497/97d96d43a495414c8bfa56e727ebd054/FLAG51d0fdcbe [2021-11-21 00:33:54,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/data/2065cb497/97d96d43a495414c8bfa56e727ebd054 [2021-11-21 00:33:54,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:33:54,300 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:33:54,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:33:54,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:33:54,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:33:54,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:33:54" (1/1) ... [2021-11-21 00:33:54,310 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ca056ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:54, skipping insertion in model container [2021-11-21 00:33:54,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:33:54" (1/1) ... [2021-11-21 00:33:54,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:33:54,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:33:54,941 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-21 00:33:55,117 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-21 00:33:55,123 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-21 00:33:55,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:33:55,184 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 00:33:55,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:33:55,233 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-21 00:33:55,327 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-21 00:33:55,328 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-21 00:33:55,339 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:33:55,352 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:33:55,399 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[33021,33034] [2021-11-21 00:33:55,454 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44124,44137] [2021-11-21 00:33:55,455 WARN L230 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_523d0115-0f20-4aa0-adbe-6df091dff89b/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test7-2.i[44245,44258] [2021-11-21 00:33:55,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:33:55,529 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:33:55,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55 WrapperNode [2021-11-21 00:33:55,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:33:55,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:33:55,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:33:55,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:33:55,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,625 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,734 INFO L137 Inliner]: procedures = 179, calls = 328, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1175 [2021-11-21 00:33:55,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:33:55,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:33:55,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:33:55,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:33:55,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:33:55,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:33:55,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:33:55,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:33:55,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (1/1) ... [2021-11-21 00:33:55,915 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:33:55,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:33:55,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:33:55,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:33:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-21 00:33:56,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 00:33:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-21 00:33:56,031 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-21 00:33:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 00:33:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:33:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 00:33:56,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 00:33:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-21 00:33:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 00:33:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 00:33:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 00:33:56,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 00:33:56,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:33:56,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:33:56,362 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:33:56,364 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:33:56,369 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-21 00:34:03,281 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:34:03,319 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:34:03,319 INFO L301 CfgBuilder]: Removed 72 assume(true) statements. [2021-11-21 00:34:03,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:03 BoogieIcfgContainer [2021-11-21 00:34:03,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:34:03,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:34:03,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:34:03,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:34:03,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:33:54" (1/3) ... [2021-11-21 00:34:03,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8fea69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:34:03, skipping insertion in model container [2021-11-21 00:34:03,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:33:55" (2/3) ... [2021-11-21 00:34:03,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a8fea69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:34:03, skipping insertion in model container [2021-11-21 00:34:03,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:34:03" (3/3) ... [2021-11-21 00:34:03,338 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test7-2.i [2021-11-21 00:34:03,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:34:03,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 635 error locations. [2021-11-21 00:34:03,411 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:34:03,423 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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 [2021-11-21 00:34:03,423 INFO L340 AbstractCegarLoop]: Starting to check reachability of 635 error locations. [2021-11-21 00:34:03,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 00:34:03,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:03,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 00:34:03,497 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:03,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:03,510 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-21 00:34:03,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:03,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1141532041] [2021-11-21 00:34:03,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:03,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:03,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:03,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:03,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 00:34:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:03,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:34:03,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:03,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:03,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:04,019 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:04,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1141532041] [2021-11-21 00:34:04,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1141532041] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:04,021 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:04,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:34:04,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339235098] [2021-11-21 00:34:04,025 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:04,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:34:04,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:04,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:34:04,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:04,074 INFO L87 Difference]: Start difference. First operand has 1249 states, 612 states have (on average 2.2663398692810457) internal successors, (1387), 1244 states have internal predecessors, (1387), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:07,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:07,145 INFO L93 Difference]: Finished difference Result 1417 states and 1492 transitions. [2021-11-21 00:34:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:07,147 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-21 00:34:07,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:07,175 INFO L225 Difference]: With dead ends: 1417 [2021-11-21 00:34:07,175 INFO L226 Difference]: Without dead ends: 1415 [2021-11-21 00:34:07,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:07,182 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1160 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:07,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 893 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 00:34:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-11-21 00:34:07,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1230. [2021-11-21 00:34:07,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 610 states have (on average 2.1163934426229507) internal successors, (1291), 1225 states have internal predecessors, (1291), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:07,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1297 transitions. [2021-11-21 00:34:07,339 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1297 transitions. Word has length 3 [2021-11-21 00:34:07,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:07,340 INFO L470 AbstractCegarLoop]: Abstraction has 1230 states and 1297 transitions. [2021-11-21 00:34:07,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1297 transitions. [2021-11-21 00:34:07,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-21 00:34:07,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:07,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-21 00:34:07,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:07,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:07,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:07,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:07,558 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-21 00:34:07,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:07,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121344826] [2021-11-21 00:34:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:07,559 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:07,561 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:07,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 00:34:07,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:07,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:34:07,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:07,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:07,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:07,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:07,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:07,828 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:07,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121344826] [2021-11-21 00:34:07,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121344826] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:07,833 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:07,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 00:34:07,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291300973] [2021-11-21 00:34:07,834 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:07,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:34:07,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:07,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:34:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:07,839 INFO L87 Difference]: Start difference. First operand 1230 states and 1297 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:14,381 INFO L93 Difference]: Finished difference Result 1894 states and 2004 transitions. [2021-11-21 00:34:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:34:14,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-21 00:34:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:14,396 INFO L225 Difference]: With dead ends: 1894 [2021-11-21 00:34:14,396 INFO L226 Difference]: Without dead ends: 1894 [2021-11-21 00:34:14,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:14,399 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 1545 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:14,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1545 Valid, 1760 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2021-11-21 00:34:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-11-21 00:34:14,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1265. [2021-11-21 00:34:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 654 states have (on average 2.09480122324159) internal successors, (1370), 1260 states have internal predecessors, (1370), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1376 transitions. [2021-11-21 00:34:14,447 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1376 transitions. Word has length 3 [2021-11-21 00:34:14,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:14,448 INFO L470 AbstractCegarLoop]: Abstraction has 1265 states and 1376 transitions. [2021-11-21 00:34:14,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:14,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1376 transitions. [2021-11-21 00:34:14,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:34:14,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:14,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:14,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-21 00:34:14,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:14,663 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:14,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:14,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-21 00:34:14,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:14,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453198406] [2021-11-21 00:34:14,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:14,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:14,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:14,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:14,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 00:34:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:14,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:34:14,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:14,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:14,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:14,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:14,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:14,906 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:14,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453198406] [2021-11-21 00:34:14,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453198406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:14,906 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:14,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-21 00:34:14,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437431578] [2021-11-21 00:34:14,907 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:14,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:34:14,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:14,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:34:14,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:14,909 INFO L87 Difference]: Start difference. First operand 1265 states and 1376 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:17,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:17,856 INFO L93 Difference]: Finished difference Result 1595 states and 1731 transitions. [2021-11-21 00:34:17,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:17,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 00:34:17,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:17,868 INFO L225 Difference]: With dead ends: 1595 [2021-11-21 00:34:17,869 INFO L226 Difference]: Without dead ends: 1595 [2021-11-21 00:34:17,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:34:17,871 INFO L933 BasicCegarLoop]: 1135 mSDtfsCounter, 975 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:17,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1479 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-21 00:34:17,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1595 states. [2021-11-21 00:34:17,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1595 to 1218. [2021-11-21 00:34:17,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1218 states, 654 states have (on average 2.018348623853211) internal successors, (1320), 1213 states have internal predecessors, (1320), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1218 states to 1218 states and 1326 transitions. [2021-11-21 00:34:17,916 INFO L78 Accepts]: Start accepts. Automaton has 1218 states and 1326 transitions. Word has length 8 [2021-11-21 00:34:17,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:17,916 INFO L470 AbstractCegarLoop]: Abstraction has 1218 states and 1326 transitions. [2021-11-21 00:34:17,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:17,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1218 states and 1326 transitions. [2021-11-21 00:34:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-21 00:34:17,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:17,918 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:17,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:18,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:18,132 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:18,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-21 00:34:18,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:18,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839493498] [2021-11-21 00:34:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:18,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:18,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:18,136 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:18,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 00:34:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:18,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:34:18,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:18,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:18,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:18,476 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:18,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839493498] [2021-11-21 00:34:18,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839493498] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:18,477 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:18,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-21 00:34:18,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5572187] [2021-11-21 00:34:18,478 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:18,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:34:18,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:34:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:18,480 INFO L87 Difference]: Start difference. First operand 1218 states and 1326 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:24,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:24,180 INFO L93 Difference]: Finished difference Result 1639 states and 1739 transitions. [2021-11-21 00:34:24,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:34:24,182 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-21 00:34:24,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:24,192 INFO L225 Difference]: With dead ends: 1639 [2021-11-21 00:34:24,192 INFO L226 Difference]: Without dead ends: 1639 [2021-11-21 00:34:24,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:24,194 INFO L933 BasicCegarLoop]: 1309 mSDtfsCounter, 1392 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:24,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1393 Valid, 1824 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-21 00:34:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-21 00:34:24,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1208. [2021-11-21 00:34:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 654 states have (on average 1.9984709480122325) internal successors, (1307), 1203 states have internal predecessors, (1307), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1313 transitions. [2021-11-21 00:34:24,235 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1313 transitions. Word has length 8 [2021-11-21 00:34:24,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:24,236 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1313 transitions. [2021-11-21 00:34:24,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:24,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1313 transitions. [2021-11-21 00:34:24,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 00:34:24,237 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:24,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:24,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:24,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:24,451 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr526ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 871378613, now seen corresponding path program 1 times [2021-11-21 00:34:24,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:24,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139669004] [2021-11-21 00:34:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:24,453 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:24,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:24,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:24,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 00:34:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:24,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:34:24,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:24,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:24,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:24,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139669004] [2021-11-21 00:34:24,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139669004] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:24,903 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:24,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:34:24,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320710024] [2021-11-21 00:34:24,904 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:24,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:34:24,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:24,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:34:24,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:24,906 INFO L87 Difference]: Start difference. First operand 1208 states and 1313 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:26,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:26,032 INFO L93 Difference]: Finished difference Result 1851 states and 1998 transitions. [2021-11-21 00:34:26,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:34:26,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 00:34:26,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:26,045 INFO L225 Difference]: With dead ends: 1851 [2021-11-21 00:34:26,045 INFO L226 Difference]: Without dead ends: 1851 [2021-11-21 00:34:26,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:34:26,047 INFO L933 BasicCegarLoop]: 1360 mSDtfsCounter, 754 mSDsluCounter, 2291 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3651 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:26,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 3651 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-21 00:34:26,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2021-11-21 00:34:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1449. [2021-11-21 00:34:26,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 895 states have (on average 1.9687150837988827) internal successors, (1762), 1444 states have internal predecessors, (1762), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:26,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 1768 transitions. [2021-11-21 00:34:26,092 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 1768 transitions. Word has length 11 [2021-11-21 00:34:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:26,093 INFO L470 AbstractCegarLoop]: Abstraction has 1449 states and 1768 transitions. [2021-11-21 00:34:26,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 1768 transitions. [2021-11-21 00:34:26,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-21 00:34:26,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:26,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:26,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-21 00:34:26,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:26,307 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:26,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:26,308 INFO L85 PathProgramCache]: Analyzing trace with hash -702153283, now seen corresponding path program 1 times [2021-11-21 00:34:26,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:26,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548304721] [2021-11-21 00:34:26,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:26,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:26,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:26,310 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:26,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-21 00:34:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:26,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:34:26,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:26,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:26,545 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:26,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548304721] [2021-11-21 00:34:26,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548304721] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:26,545 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:26,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:34:26,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537500140] [2021-11-21 00:34:26,546 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:34:26,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:26,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:34:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:26,548 INFO L87 Difference]: Start difference. First operand 1449 states and 1768 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:26,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:26,596 INFO L93 Difference]: Finished difference Result 1611 states and 1916 transitions. [2021-11-21 00:34:26,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:26,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-21 00:34:26,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:26,607 INFO L225 Difference]: With dead ends: 1611 [2021-11-21 00:34:26,608 INFO L226 Difference]: Without dead ends: 1611 [2021-11-21 00:34:26,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:26,611 INFO L933 BasicCegarLoop]: 1184 mSDtfsCounter, 583 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 2820 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:26,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [583 Valid, 2820 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:34:26,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2021-11-21 00:34:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1389. [2021-11-21 00:34:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 859 states have (on average 1.951105937136205) internal successors, (1676), 1384 states have internal predecessors, (1676), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:26,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1682 transitions. [2021-11-21 00:34:26,655 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1682 transitions. Word has length 13 [2021-11-21 00:34:26,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:26,656 INFO L470 AbstractCegarLoop]: Abstraction has 1389 states and 1682 transitions. [2021-11-21 00:34:26,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1682 transitions. [2021-11-21 00:34:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-21 00:34:26,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:26,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:26,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:26,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:26,872 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:26,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -459414345, now seen corresponding path program 1 times [2021-11-21 00:34:26,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:26,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831214571] [2021-11-21 00:34:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:26,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:26,877 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:26,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-21 00:34:27,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:27,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:34:27,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:27,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:27,153 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:27,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831214571] [2021-11-21 00:34:27,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831214571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:27,153 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:27,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 00:34:27,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336506291] [2021-11-21 00:34:27,154 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:27,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:34:27,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:27,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:34:27,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:34:27,156 INFO L87 Difference]: Start difference. First operand 1389 states and 1682 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:27,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:27,295 INFO L93 Difference]: Finished difference Result 1583 states and 1860 transitions. [2021-11-21 00:34:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:34:27,295 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-21 00:34:27,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:27,305 INFO L225 Difference]: With dead ends: 1583 [2021-11-21 00:34:27,306 INFO L226 Difference]: Without dead ends: 1583 [2021-11-21 00:34:27,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:27,307 INFO L933 BasicCegarLoop]: 1139 mSDtfsCounter, 554 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:27,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 3907 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:34:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2021-11-21 00:34:27,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1359. [2021-11-21 00:34:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 843 states have (on average 1.9193357058125742) internal successors, (1618), 1354 states have internal predecessors, (1618), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:27,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1624 transitions. [2021-11-21 00:34:27,349 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1624 transitions. Word has length 15 [2021-11-21 00:34:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:27,350 INFO L470 AbstractCegarLoop]: Abstraction has 1359 states and 1624 transitions. [2021-11-21 00:34:27,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:27,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1624 transitions. [2021-11-21 00:34:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 00:34:27,351 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:27,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:27,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:27,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:27,565 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr634ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:27,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash 2058395604, now seen corresponding path program 1 times [2021-11-21 00:34:27,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674910890] [2021-11-21 00:34:27,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:27,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:27,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:27,570 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:27,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 00:34:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:27,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:34:27,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:27,806 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:27,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:27,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-21 00:34:27,881 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-21 00:34:27,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-21 00:34:27,984 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-21 00:34:27,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-21 00:34:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:28,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:28,139 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:28,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674910890] [2021-11-21 00:34:28,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674910890] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:28,139 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:28,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 00:34:28,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618790542] [2021-11-21 00:34:28,140 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:28,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:34:28,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:34:28,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:28,142 INFO L87 Difference]: Start difference. First operand 1359 states and 1624 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:30,658 INFO L93 Difference]: Finished difference Result 1795 states and 2119 transitions. [2021-11-21 00:34:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:34:30,659 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-21 00:34:30,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:30,669 INFO L225 Difference]: With dead ends: 1795 [2021-11-21 00:34:30,669 INFO L226 Difference]: Without dead ends: 1795 [2021-11-21 00:34:30,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:34:30,670 INFO L933 BasicCegarLoop]: 1108 mSDtfsCounter, 424 mSDsluCounter, 4204 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 5312 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:30,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 5312 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-11-21 00:34:30,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-21 00:34:30,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1358. [2021-11-21 00:34:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 842 states have (on average 1.9192399049881235) internal successors, (1616), 1353 states have internal predecessors, (1616), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1622 transitions. [2021-11-21 00:34:30,711 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1622 transitions. Word has length 16 [2021-11-21 00:34:30,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:30,712 INFO L470 AbstractCegarLoop]: Abstraction has 1358 states and 1622 transitions. [2021-11-21 00:34:30,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:30,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1622 transitions. [2021-11-21 00:34:30,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-21 00:34:30,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:30,713 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:34:30,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:30,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:30,927 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:30,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:30,928 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-21 00:34:30,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:30,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309440381] [2021-11-21 00:34:30,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:30,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:30,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:30,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:30,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-21 00:34:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:31,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-21 00:34:31,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:31,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:31,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:31,240 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:31,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309440381] [2021-11-21 00:34:31,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309440381] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:31,241 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:31,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-21 00:34:31,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721360389] [2021-11-21 00:34:31,241 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:31,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:34:31,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:31,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:34:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:31,247 INFO L87 Difference]: Start difference. First operand 1358 states and 1622 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:31,287 INFO L93 Difference]: Finished difference Result 1298 states and 1536 transitions. [2021-11-21 00:34:31,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:34:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-21 00:34:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:31,294 INFO L225 Difference]: With dead ends: 1298 [2021-11-21 00:34:31,294 INFO L226 Difference]: Without dead ends: 1298 [2021-11-21 00:34:31,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:31,295 INFO L933 BasicCegarLoop]: 1105 mSDtfsCounter, 2178 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:31,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2181 Valid, 1127 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:34:31,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2021-11-21 00:34:31,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1298. [2021-11-21 00:34:31,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 806 states have (on average 1.8982630272952854) internal successors, (1530), 1293 states have internal predecessors, (1530), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:31,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 1536 transitions. [2021-11-21 00:34:31,354 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 1536 transitions. Word has length 18 [2021-11-21 00:34:31,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:31,354 INFO L470 AbstractCegarLoop]: Abstraction has 1298 states and 1536 transitions. [2021-11-21 00:34:31,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:31,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 1536 transitions. [2021-11-21 00:34:31,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-21 00:34:31,355 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:31,356 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] [2021-11-21 00:34:31,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:31,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:31,570 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:31,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-21 00:34:31,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:31,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1718009028] [2021-11-21 00:34:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:31,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:31,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:31,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:31,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-21 00:34:31,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:31,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:34:31,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:31,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:31,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:31,870 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:31,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1718009028] [2021-11-21 00:34:31,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1718009028] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:31,871 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:31,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-21 00:34:31,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448750981] [2021-11-21 00:34:31,871 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:31,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:34:31,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:34:31,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:34:31,873 INFO L87 Difference]: Start difference. First operand 1298 states and 1536 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:31,988 INFO L93 Difference]: Finished difference Result 1270 states and 1480 transitions. [2021-11-21 00:34:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:34:31,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-21 00:34:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:31,995 INFO L225 Difference]: With dead ends: 1270 [2021-11-21 00:34:31,995 INFO L226 Difference]: Without dead ends: 1270 [2021-11-21 00:34:31,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:31,996 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 2110 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:31,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 2135 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:34:32,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2021-11-21 00:34:32,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1268. [2021-11-21 00:34:32,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1268 states, 790 states have (on average 1.8632911392405063) internal successors, (1472), 1263 states have internal predecessors, (1472), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:32,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1268 states to 1268 states and 1478 transitions. [2021-11-21 00:34:32,028 INFO L78 Accepts]: Start accepts. Automaton has 1268 states and 1478 transitions. Word has length 20 [2021-11-21 00:34:32,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:32,029 INFO L470 AbstractCegarLoop]: Abstraction has 1268 states and 1478 transitions. [2021-11-21 00:34:32,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:32,030 INFO L276 IsEmpty]: Start isEmpty. Operand 1268 states and 1478 transitions. [2021-11-21 00:34:32,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 00:34:32,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:32,032 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] [2021-11-21 00:34:32,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:32,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:32,246 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:32,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:32,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-21 00:34:32,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:32,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598783848] [2021-11-21 00:34:32,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:32,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:32,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:32,249 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:32,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 00:34:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:32,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:34:32,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:32,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:32,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:32,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:32,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598783848] [2021-11-21 00:34:32,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598783848] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:32,717 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:32,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-21 00:34:32,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722102533] [2021-11-21 00:34:32,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:32,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:34:32,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:32,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:34:32,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:32,718 INFO L87 Difference]: Start difference. First operand 1268 states and 1478 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:35,977 INFO L93 Difference]: Finished difference Result 1850 states and 2182 transitions. [2021-11-21 00:34:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:34:35,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-21 00:34:35,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:35,994 INFO L225 Difference]: With dead ends: 1850 [2021-11-21 00:34:35,994 INFO L226 Difference]: Without dead ends: 1850 [2021-11-21 00:34:35,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:34:35,995 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1719 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:35,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 1222 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1112 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:34:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2021-11-21 00:34:36,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1264. [2021-11-21 00:34:36,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 790 states have (on average 1.8531645569620254) internal successors, (1464), 1259 states have internal predecessors, (1464), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:36,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1470 transitions. [2021-11-21 00:34:36,030 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1470 transitions. Word has length 34 [2021-11-21 00:34:36,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:36,032 INFO L470 AbstractCegarLoop]: Abstraction has 1264 states and 1470 transitions. [2021-11-21 00:34:36,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1470 transitions. [2021-11-21 00:34:36,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-21 00:34:36,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:36,039 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] [2021-11-21 00:34:36,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:36,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:36,255 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:36,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:36,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-21 00:34:36,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:36,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812668941] [2021-11-21 00:34:36,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:36,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:36,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:36,257 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:36,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-21 00:34:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:36,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:34:36,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:36,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:36,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:37,355 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:37,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812668941] [2021-11-21 00:34:37,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812668941] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:37,356 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:37,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:34:37,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834717264] [2021-11-21 00:34:37,356 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:37,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:34:37,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:37,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:34:37,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:34:37,358 INFO L87 Difference]: Start difference. First operand 1264 states and 1470 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:46,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:46,916 INFO L93 Difference]: Finished difference Result 1977 states and 2286 transitions. [2021-11-21 00:34:46,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:34:46,917 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-21 00:34:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:46,926 INFO L225 Difference]: With dead ends: 1977 [2021-11-21 00:34:46,926 INFO L226 Difference]: Without dead ends: 1977 [2021-11-21 00:34:46,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:34:46,927 INFO L933 BasicCegarLoop]: 1357 mSDtfsCounter, 2009 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 2021 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 3001 SdHoareTripleChecker+Invalid, 2032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:46,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2009 Valid, 3001 Invalid, 2032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2021 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2021-11-21 00:34:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2021-11-21 00:34:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1260. [2021-11-21 00:34:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 790 states have (on average 1.8430379746835444) internal successors, (1456), 1255 states have internal predecessors, (1456), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:46,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1462 transitions. [2021-11-21 00:34:46,958 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1462 transitions. Word has length 34 [2021-11-21 00:34:46,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:46,959 INFO L470 AbstractCegarLoop]: Abstraction has 1260 states and 1462 transitions. [2021-11-21 00:34:46,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:46,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1462 transitions. [2021-11-21 00:34:46,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-21 00:34:46,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:46,961 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] [2021-11-21 00:34:46,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:47,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:47,176 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:47,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:47,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2021-11-21 00:34:47,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:47,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40198662] [2021-11-21 00:34:47,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:47,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:47,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:47,178 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:47,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-21 00:34:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:47,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:34:47,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:47,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:47,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:47,761 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:47,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40198662] [2021-11-21 00:34:47,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40198662] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:47,762 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:47,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:34:47,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342417058] [2021-11-21 00:34:47,762 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:47,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:34:47,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:47,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:34:47,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:34:47,766 INFO L87 Difference]: Start difference. First operand 1260 states and 1462 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:34:47,841 INFO L93 Difference]: Finished difference Result 1248 states and 1442 transitions. [2021-11-21 00:34:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:34:47,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-21 00:34:47,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:34:47,852 INFO L225 Difference]: With dead ends: 1248 [2021-11-21 00:34:47,853 INFO L226 Difference]: Without dead ends: 1248 [2021-11-21 00:34:47,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:34:47,855 INFO L933 BasicCegarLoop]: 1054 mSDtfsCounter, 1036 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:34:47,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 2113 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:34:47,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2021-11-21 00:34:47,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1248. [2021-11-21 00:34:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 778 states have (on average 1.845758354755784) internal successors, (1436), 1243 states have internal predecessors, (1436), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:34:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1442 transitions. [2021-11-21 00:34:47,882 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1442 transitions. Word has length 52 [2021-11-21 00:34:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:34:47,883 INFO L470 AbstractCegarLoop]: Abstraction has 1248 states and 1442 transitions. [2021-11-21 00:34:47,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:34:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1442 transitions. [2021-11-21 00:34:47,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-21 00:34:47,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:34:47,886 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] [2021-11-21 00:34:47,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-21 00:34:48,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:34:48,106 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:34:48,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:34:48,107 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-21 00:34:48,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:34:48,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1053489933] [2021-11-21 00:34:48,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:34:48,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:34:48,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:34:48,111 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:34:48,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 00:34:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:34:48,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:34:48,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:34:48,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:48,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:34:49,394 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-21 00:34:49,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 26 [2021-11-21 00:34:49,417 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-21 00:34:49,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-21 00:34:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:49,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:34:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:34:55,127 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:34:55,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1053489933] [2021-11-21 00:34:55,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1053489933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:34:55,127 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:34:55,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:34:55,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51015071] [2021-11-21 00:34:55,127 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:34:55,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:34:55,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:34:55,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:34:55,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-21 00:34:55,129 INFO L87 Difference]: Start difference. First operand 1248 states and 1442 transitions. Second operand has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:35:02,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:02,008 INFO L93 Difference]: Finished difference Result 1795 states and 2079 transitions. [2021-11-21 00:35:02,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:35:02,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-21 00:35:02,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:02,019 INFO L225 Difference]: With dead ends: 1795 [2021-11-21 00:35:02,019 INFO L226 Difference]: Without dead ends: 1795 [2021-11-21 00:35:02,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-21 00:35:02,020 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 1326 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1330 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1580 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:02,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1330 Valid, 2161 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1574 Invalid, 0 Unknown, 1580 Unchecked, 6.8s Time] [2021-11-21 00:35:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2021-11-21 00:35:02,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1226. [2021-11-21 00:35:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 788 states have (on average 1.8045685279187818) internal successors, (1422), 1221 states have internal predecessors, (1422), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:35:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1428 transitions. [2021-11-21 00:35:02,053 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1428 transitions. Word has length 60 [2021-11-21 00:35:02,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:02,053 INFO L470 AbstractCegarLoop]: Abstraction has 1226 states and 1428 transitions. [2021-11-21 00:35:02,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.2) internal successors, (116), 6 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:35:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1428 transitions. [2021-11-21 00:35:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-21 00:35:02,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:02,055 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] [2021-11-21 00:35:02,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 00:35:02,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:35:02,271 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:35:02,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-21 00:35:02,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:35:02,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29628757] [2021-11-21 00:35:02,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:02,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:35:02,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:35:02,274 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:35:02,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-21 00:35:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:02,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:35:02,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:02,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:02,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:02,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-21 00:35:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:03,207 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:35:03,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29628757] [2021-11-21 00:35:03,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29628757] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:03,208 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:03,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-21 00:35:03,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892500000] [2021-11-21 00:35:03,209 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:03,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:35:03,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:35:03,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:35:03,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:35:03,211 INFO L87 Difference]: Start difference. First operand 1226 states and 1428 transitions. Second operand has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:35:06,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:06,453 INFO L93 Difference]: Finished difference Result 1224 states and 1426 transitions. [2021-11-21 00:35:06,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:35:06,454 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-21 00:35:06,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:06,461 INFO L225 Difference]: With dead ends: 1224 [2021-11-21 00:35:06,462 INFO L226 Difference]: Without dead ends: 1224 [2021-11-21 00:35:06,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:35:06,463 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 813 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:06,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 1092 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:35:06,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-11-21 00:35:06,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1224. [2021-11-21 00:35:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 788 states have (on average 1.8020304568527918) internal successors, (1420), 1219 states have internal predecessors, (1420), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:35:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1426 transitions. [2021-11-21 00:35:06,490 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1426 transitions. Word has length 62 [2021-11-21 00:35:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:06,490 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 1426 transitions. [2021-11-21 00:35:06,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:35:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1426 transitions. [2021-11-21 00:35:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 00:35:06,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:06,492 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] [2021-11-21 00:35:06,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-21 00:35:06,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:35:06,708 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:35:06,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:06,708 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-21 00:35:06,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:35:06,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21928103] [2021-11-21 00:35:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:06,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:35:06,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:35:06,710 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:35:06,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-21 00:35:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:06,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 00:35:06,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:07,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:35:07,063 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-21 00:35:07,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-21 00:35:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:07,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:07,270 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:35:07,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21928103] [2021-11-21 00:35:07,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21928103] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:07,270 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:07,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-21 00:35:07,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312270684] [2021-11-21 00:35:07,271 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:07,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 00:35:07,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:35:07,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 00:35:07,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-21 00:35:07,272 INFO L87 Difference]: Start difference. First operand 1224 states and 1426 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:35:10,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:10,738 INFO L93 Difference]: Finished difference Result 1223 states and 1425 transitions. [2021-11-21 00:35:10,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:35:10,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-21 00:35:10,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:10,747 INFO L225 Difference]: With dead ends: 1223 [2021-11-21 00:35:10,748 INFO L226 Difference]: Without dead ends: 1223 [2021-11-21 00:35:10,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-21 00:35:10,749 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 4 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:10,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2584 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-11-21 00:35:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2021-11-21 00:35:10,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1223. [2021-11-21 00:35:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 788 states have (on average 1.8007614213197969) internal successors, (1419), 1218 states have internal predecessors, (1419), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:35:10,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1425 transitions. [2021-11-21 00:35:10,776 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1425 transitions. Word has length 65 [2021-11-21 00:35:10,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:10,776 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1425 transitions. [2021-11-21 00:35:10,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:35:10,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1425 transitions. [2021-11-21 00:35:10,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-21 00:35:10,778 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:10,778 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] [2021-11-21 00:35:10,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-21 00:35:10,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:35:10,995 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:35:10,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-21 00:35:10,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:35:10,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [816953620] [2021-11-21 00:35:10,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:10,997 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:35:10,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:35:10,998 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:35:11,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 00:35:11,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:11,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 00:35:11,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:11,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:35:11,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-21 00:35:11,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:35:11,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-21 00:35:11,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-21 00:35:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:11,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:11,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:11,847 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:35:11,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [816953620] [2021-11-21 00:35:11,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [816953620] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:11,848 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:11,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-21 00:35:11,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634738205] [2021-11-21 00:35:11,848 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:11,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 00:35:11,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:35:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 00:35:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:35:11,849 INFO L87 Difference]: Start difference. First operand 1223 states and 1425 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:35:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:24,274 INFO L93 Difference]: Finished difference Result 1222 states and 1424 transitions. [2021-11-21 00:35:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:35:24,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-21 00:35:24,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:24,282 INFO L225 Difference]: With dead ends: 1222 [2021-11-21 00:35:24,282 INFO L226 Difference]: Without dead ends: 1222 [2021-11-21 00:35:24,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 00:35:24,283 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 3 mSDsluCounter, 2695 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3713 SdHoareTripleChecker+Invalid, 2401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:24,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 3713 Invalid, 2401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2021-11-21 00:35:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-11-21 00:35:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1222. [2021-11-21 00:35:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 787 states have (on average 1.8017789072426937) internal successors, (1418), 1217 states have internal predecessors, (1418), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 00:35:24,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1424 transitions. [2021-11-21 00:35:24,310 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1424 transitions. Word has length 65 [2021-11-21 00:35:24,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:24,311 INFO L470 AbstractCegarLoop]: Abstraction has 1222 states and 1424 transitions. [2021-11-21 00:35:24,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 00:35:24,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1424 transitions. [2021-11-21 00:35:24,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-21 00:35:24,312 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:24,312 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] [2021-11-21 00:35:24,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-21 00:35:24,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:35:24,528 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:35:24,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:24,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1088613615, now seen corresponding path program 1 times [2021-11-21 00:35:24,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:35:24,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137016452] [2021-11-21 00:35:24,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:24,529 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:35:24,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:35:24,535 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:35:24,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-21 00:35:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:24,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 00:35:24,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:25,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:25,298 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:35:25,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137016452] [2021-11-21 00:35:25,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137016452] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 00:35:25,299 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:35:25,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-21 00:35:25,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887072753] [2021-11-21 00:35:25,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 00:35:25,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 00:35:25,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:35:25,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 00:35:25,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 00:35:25,301 INFO L87 Difference]: Start difference. First operand 1222 states and 1424 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:35:25,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:25,444 INFO L93 Difference]: Finished difference Result 1232 states and 1437 transitions. [2021-11-21 00:35:25,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 00:35:25,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 73 [2021-11-21 00:35:25,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:25,453 INFO L225 Difference]: With dead ends: 1232 [2021-11-21 00:35:25,453 INFO L226 Difference]: Without dead ends: 1232 [2021-11-21 00:35:25,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-21 00:35:25,454 INFO L933 BasicCegarLoop]: 1018 mSDtfsCounter, 11 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:25,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 3048 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:35:25,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2021-11-21 00:35:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 1232. [2021-11-21 00:35:25,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 795 states have (on average 1.79874213836478) internal successors, (1430), 1226 states have internal predecessors, (1430), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 00:35:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1437 transitions. [2021-11-21 00:35:25,487 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1437 transitions. Word has length 73 [2021-11-21 00:35:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:25,487 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1437 transitions. [2021-11-21 00:35:25,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:35:25,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1437 transitions. [2021-11-21 00:35:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-21 00:35:25,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:25,489 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-21 00:35:25,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-21 00:35:25,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 00:35:25,703 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:35:25,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:25,703 INFO L85 PathProgramCache]: Analyzing trace with hash 973507983, now seen corresponding path program 1 times [2021-11-21 00:35:25,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:35:25,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140156506] [2021-11-21 00:35:25,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:25,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:35:25,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:35:25,705 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:35:25,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-21 00:35:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:25,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:35:25,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:26,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:26,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:26,372 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:35:26,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140156506] [2021-11-21 00:35:26,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140156506] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:35:26,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678813590] [2021-11-21 00:35:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:26,372 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:35:26,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:35:26,374 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:35:26,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-21 00:35:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:26,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 00:35:26,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:26,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:27,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:27,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678813590] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:35:27,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988406694] [2021-11-21 00:35:27,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:35:27,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:35:27,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:35:27,113 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:35:27,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-21 00:35:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:35:27,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:35:27,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:27,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:27,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988406694] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:35:27,945 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 00:35:27,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-21 00:35:27,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999573753] [2021-11-21 00:35:27,945 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 00:35:27,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-21 00:35:27,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:35:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-21 00:35:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-21 00:35:27,948 INFO L87 Difference]: Start difference. First operand 1232 states and 1437 transitions. Second operand has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:35:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:35:28,639 INFO L93 Difference]: Finished difference Result 1246 states and 1454 transitions. [2021-11-21 00:35:28,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 00:35:28,640 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 75 [2021-11-21 00:35:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:35:28,647 INFO L225 Difference]: With dead ends: 1246 [2021-11-21 00:35:28,647 INFO L226 Difference]: Without dead ends: 1240 [2021-11-21 00:35:28,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=318, Unknown=0, NotChecked=0, Total=506 [2021-11-21 00:35:28,649 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 40 mSDsluCounter, 5075 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 6094 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-21 00:35:28,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 6094 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-21 00:35:28,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2021-11-21 00:35:28,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1238. [2021-11-21 00:35:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1238 states, 801 states have (on average 1.794007490636704) internal successors, (1437), 1232 states have internal predecessors, (1437), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 00:35:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1444 transitions. [2021-11-21 00:35:28,682 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1444 transitions. Word has length 75 [2021-11-21 00:35:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:35:28,683 INFO L470 AbstractCegarLoop]: Abstraction has 1238 states and 1444 transitions. [2021-11-21 00:35:28,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-21 00:35:28,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1444 transitions. [2021-11-21 00:35:28,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 00:35:28,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:35:28,685 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:35:28,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-21 00:35:28,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-21 00:35:29,107 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2021-11-21 00:35:29,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 00:35:29,300 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:35:29,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:35:29,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1648945, now seen corresponding path program 2 times [2021-11-21 00:35:29,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:35:29,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1872893082] [2021-11-21 00:35:29,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:35:29,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:35:29,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:35:29,303 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:35:29,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-21 00:35:29,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:35:29,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:35:29,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:35:29,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:30,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:30,680 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:35:30,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1872893082] [2021-11-21 00:35:30,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1872893082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:35:30,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1295909631] [2021-11-21 00:35:30,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:35:30,681 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:35:30,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:35:30,682 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:35:30,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2021-11-21 00:35:31,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:35:31,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:35:31,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 00:35:31,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:35:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:31,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:35:32,095 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:35:32,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1295909631] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:35:32,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989028639] [2021-11-21 00:35:32,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 00:35:32,096 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:35:32,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:35:32,097 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:35:32,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-21 00:36:02,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 00:36:02,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:36:02,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-21 00:36:02,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:36:02,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:36:03,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 00:36:03,197 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 00:36:03,197 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 14 [2021-11-21 00:36:03,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 00:36:03,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-21 00:36:03,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2021-11-21 00:36:03,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2021-11-21 00:38:40,635 WARN L227 SmtUtils]: Spent 43.46s on a formula simplification. DAG size of input: 114 DAG size of output: 34 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:38:40,636 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-21 00:38:40,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 143 treesize of output 135 [2021-11-21 00:39:43,755 WARN L227 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 118 DAG size of output: 40 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 00:39:43,756 INFO L354 Elim1Store]: treesize reduction 1174, result has 7.8 percent of original size [2021-11-21 00:39:43,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 183 treesize of output 230 [2021-11-21 00:39:52,880 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-21 00:39:52,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 209 treesize of output 104 [2021-11-21 00:39:52,902 INFO L354 Elim1Store]: treesize reduction 200, result has 0.5 percent of original size [2021-11-21 00:39:52,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 41 [2021-11-21 00:40:05,105 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 14 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:40:05,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:40:14,928 WARN L227 SmtUtils]: Spent 9.18s on a formula simplification that was a NOOP. DAG size: 81 (called from [L 231] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-21 00:44:58,939 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse2 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32))) (let ((.cse10 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|)) (.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse13 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32))) (let ((.cse16 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|) .cse17) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse17) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse17) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse17))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse16) (bvadd .cse16 (_ bv20 32)))))))) is different from true [2021-11-21 00:45:06,114 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0))))) (and (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_7)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse7 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse8 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse8) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse8))))) (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (v_subst_8 (_ BitVec 32))) (let ((.cse9 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse10 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_8) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse10) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse10))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse9) (bvadd .cse9 (_ bv20 32)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse11 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse12 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse11 .cse12) .cse13 .cse12) .cse14 .cse12) .cse15 .cse12) .cse16 .cse12) .cse17 .cse12))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse11 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse18)))))))) is different from false [2021-11-21 00:45:15,552 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse0 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|) .cse1) (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1) (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0))))) (and (forall ((v_subst_5 (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse3) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1) .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd .cse2 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr276| (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr276|)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse9 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse10 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2)) (.cse11 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse5 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse4 .cse5) .cse6 .cse5) .cse7 .cse5) .cse8 .cse5) .cse9 .cse5) .cse10 .cse5))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse4 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32)) .cse10 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse11)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr276_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_107| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr276_104| (_ BitVec 32))) (not (let ((.cse12 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_105|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_106|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#ptr.offset_18| |v_#Ultimate.C_memset_#t~loopctr276_107|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse18 (bvadd |v_#Ultimate.C_memset_#t~loopctr276_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse19 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (_ bv20 32) (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13) .cse16 .cse13) .cse17 .cse13) .cse18 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32)) .cse17 (_ bv0 32)) .cse18 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse19)))))))) is different from false [2021-11-21 00:46:12,687 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-21 00:46:12,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-21 00:46:12,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-21 00:46:12,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688508337] [2021-11-21 00:46:12,688 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-21 00:46:12,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-21 00:46:12,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 00:46:12,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-21 00:46:12,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1175, Unknown=154, NotChecked=228, Total=1722 [2021-11-21 00:46:12,690 INFO L87 Difference]: Start difference. First operand 1238 states and 1444 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:47:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:47:06,676 INFO L93 Difference]: Finished difference Result 1264 states and 1480 transitions. [2021-11-21 00:47:06,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 00:47:06,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 79 [2021-11-21 00:47:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:47:06,682 INFO L225 Difference]: With dead ends: 1264 [2021-11-21 00:47:06,682 INFO L226 Difference]: Without dead ends: 1260 [2021-11-21 00:47:06,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 488.7s TimeCoverageRelationStatistics Valid=506, Invalid=2650, Unknown=162, NotChecked=342, Total=3660 [2021-11-21 00:47:06,685 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 59 mSDsluCounter, 9162 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 10185 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:47:06,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 10185 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-21 00:47:06,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2021-11-21 00:47:06,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1250. [2021-11-21 00:47:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 813 states have (on average 1.7872078720787208) internal successors, (1453), 1244 states have internal predecessors, (1453), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-21 00:47:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1460 transitions. [2021-11-21 00:47:06,714 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1460 transitions. Word has length 79 [2021-11-21 00:47:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:47:06,714 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1460 transitions. [2021-11-21 00:47:06,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-21 00:47:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1460 transitions. [2021-11-21 00:47:06,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-21 00:47:06,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:47:06,716 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:47:06,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-21 00:47:06,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-21 00:47:07,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2021-11-21 00:47:07,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 00:47:07,332 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 631 more)] === [2021-11-21 00:47:07,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:47:07,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1487112527, now seen corresponding path program 3 times [2021-11-21 00:47:07,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 00:47:07,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616216474] [2021-11-21 00:47:07,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:47:07,333 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 00:47:07,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 00:47:07,334 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 00:47:07,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-21 00:47:08,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 00:47:08,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:47:08,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:47:08,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:47:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:11,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:47:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:19,737 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 00:47:19,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616216474] [2021-11-21 00:47:19,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616216474] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:47:19,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1267276191] [2021-11-21 00:47:19,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:47:19,738 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 00:47:19,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 00:47:19,751 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 00:47:19,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2021-11-21 00:47:21,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-21 00:47:21,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:47:21,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-21 00:47:21,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:47:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:22,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:47:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 00:47:24,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1267276191] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:47:24,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97330788] [2021-11-21 00:47:24,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:47:24,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:47:24,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:47:24,446 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:47:24,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_523d0115-0f20-4aa0-adbe-6df091dff89b/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process