./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/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 f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:39:58,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:39:58,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:39:58,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:39:58,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:39:58,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:39:58,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:39:58,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:39:58,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:39:58,513 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:39:58,514 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:39:58,515 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:39:58,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:39:58,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:39:58,519 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:39:58,520 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:39:58,522 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:39:58,523 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:39:58,525 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:39:58,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:39:58,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:39:58,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:39:58,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:39:58,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:39:58,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:39:58,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:39:58,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:39:58,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:39:58,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:39:58,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:39:58,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:39:58,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:39:58,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:39:58,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:39:58,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:39:58,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:39:58,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:39:58,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:39:58,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:39:58,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:39:58,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:39:58,554 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-20 23:39:58,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:39:58,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:39:58,605 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:39:58,605 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:39:58,606 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:39:58,606 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:39:58,606 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:39:58,607 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:39:58,607 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:39:58,607 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-20 23:39:58,608 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:39:58,608 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:39:58,609 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-20 23:39:58,609 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-20 23:39:58,609 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:39:58,609 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-20 23:39:58,610 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-20 23:39:58,610 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-20 23:39:58,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:39:58,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:39:58,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:39:58,611 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:39:58,611 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:39:58,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:39:58,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:39:58,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:39:58,618 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:39:58,618 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:39:58,618 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 23:39:58,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:39:58,619 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:39:58,619 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:39:58,619 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:39:58,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:39:58,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:39:58,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:39:58,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:39:58,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:39:58,621 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-20 23:39:58,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 23:39:58,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:39:58,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:39:58,622 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 [2021-11-20 23:39:58,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:39:58,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:39:58,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:39:58,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:39:58,921 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:39:58,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2021-11-20 23:39:58,998 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data/f55cbca66/29158e93cb544d2599b03ef79ea11728/FLAG8e28ad5f8 [2021-11-20 23:39:59,603 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:39:59,606 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2021-11-20 23:39:59,635 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data/f55cbca66/29158e93cb544d2599b03ef79ea11728/FLAG8e28ad5f8 [2021-11-20 23:39:59,810 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data/f55cbca66/29158e93cb544d2599b03ef79ea11728 [2021-11-20 23:39:59,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:39:59,814 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:39:59,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:39:59,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:39:59,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:39:59,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:39:59" (1/1) ... [2021-11-20 23:39:59,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745678a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:39:59, skipping insertion in model container [2021-11-20 23:39:59,822 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:39:59" (1/1) ... [2021-11-20 23:39:59,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:39:59,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:40:00,454 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2021-11-20 23:40:00,608 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2021-11-20 23:40:00,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:40:00,644 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) [2021-11-20 23:40:00,645 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4cec1baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:00, skipping insertion in model container [2021-11-20 23:40:00,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:40:00,646 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 23:40:00,649 INFO L158 Benchmark]: Toolchain (without parser) took 832.97ms. Allocated memory is still 92.3MB. Free memory was 69.3MB in the beginning and 59.1MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:40:00,650 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory was 67.6MB in the beginning and 67.5MB in the end (delta: 79.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 23:40:00,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 830.62ms. Allocated memory is still 92.3MB. Free memory was 69.0MB in the beginning and 59.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 23:40:00,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 92.3MB. Free memory was 67.6MB in the beginning and 67.5MB in the end (delta: 79.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 830.62ms. Allocated memory is still 92.3MB. Free memory was 69.0MB in the beginning and 59.1MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/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 f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 23:40:02,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 23:40:02,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 23:40:02,900 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 23:40:02,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 23:40:02,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 23:40:02,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 23:40:02,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 23:40:02,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 23:40:02,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 23:40:02,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 23:40:02,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 23:40:02,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 23:40:02,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 23:40:02,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 23:40:02,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 23:40:02,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 23:40:02,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 23:40:02,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 23:40:02,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 23:40:02,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 23:40:02,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 23:40:02,965 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 23:40:02,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 23:40:02,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 23:40:02,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 23:40:02,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 23:40:02,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 23:40:02,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 23:40:02,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 23:40:02,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 23:40:02,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 23:40:02,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 23:40:02,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 23:40:02,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 23:40:02,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 23:40:02,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 23:40:02,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 23:40:02,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 23:40:02,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 23:40:02,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 23:40:02,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-20 23:40:03,035 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 23:40:03,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 23:40:03,036 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 23:40:03,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 23:40:03,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 23:40:03,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 23:40:03,037 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-20 23:40:03,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-20 23:40:03,037 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-20 23:40:03,038 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-20 23:40:03,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-20 23:40:03,038 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-20 23:40:03,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 23:40:03,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 23:40:03,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 23:40:03,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 23:40:03,040 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 23:40:03,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 23:40:03,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 23:40:03,040 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 23:40:03,041 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 23:40:03,041 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 23:40:03,041 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 23:40:03,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 23:40:03,042 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 23:40:03,042 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 23:40:03,042 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 23:40:03,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 23:40:03,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 23:40:03,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 23:40:03,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 23:40:03,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 23:40:03,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:40:03,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 23:40:03,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 23:40:03,044 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-20 23:40:03,044 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 23:40:03,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 23:40:03,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 23:40:03,045 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 [2021-11-20 23:40:03,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 23:40:03,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 23:40:03,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 23:40:03,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 23:40:03,421 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 23:40:03,423 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2021-11-20 23:40:03,494 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data/d819224c7/5f43ef749a234a0cbd62787bbf804f66/FLAG59c33b451 [2021-11-20 23:40:04,187 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 23:40:04,188 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2021-11-20 23:40:04,215 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data/d819224c7/5f43ef749a234a0cbd62787bbf804f66/FLAG59c33b451 [2021-11-20 23:40:04,447 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/data/d819224c7/5f43ef749a234a0cbd62787bbf804f66 [2021-11-20 23:40:04,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 23:40:04,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 23:40:04,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 23:40:04,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 23:40:04,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 23:40:04,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:40:04" (1/1) ... [2021-11-20 23:40:04,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63e85c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:04, skipping insertion in model container [2021-11-20 23:40:04,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:40:04" (1/1) ... [2021-11-20 23:40:04,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 23:40:04,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:40:04,942 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2021-11-20 23:40:05,038 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2021-11-20 23:40:05,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:40:05,056 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 23:40:05,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 23:40:05,103 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2021-11-20 23:40:05,200 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2021-11-20 23:40:05,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:40:05,217 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 23:40:05,252 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2021-11-20 23:40:05,298 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_06e6dcba-742e-490b-a9f7-55e0bccf87ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2021-11-20 23:40:05,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 23:40:05,362 INFO L208 MainTranslator]: Completed translation [2021-11-20 23:40:05,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05 WrapperNode [2021-11-20 23:40:05,362 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 23:40:05,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 23:40:05,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 23:40:05,364 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 23:40:05,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,403 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,463 INFO L137 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 890 [2021-11-20 23:40:05,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 23:40:05,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 23:40:05,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 23:40:05,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 23:40:05,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,557 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 23:40:05,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 23:40:05,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 23:40:05,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 23:40:05,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (1/1) ... [2021-11-20 23:40:05,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 23:40:05,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:40:05,623 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 23:40:05,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 23:40:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 23:40:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 23:40:05,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 23:40:05,673 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 23:40:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 23:40:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-20 23:40:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 23:40:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 23:40:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 23:40:05,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 23:40:05,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 23:40:05,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 23:40:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 23:40:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 23:40:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 23:40:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 23:40:05,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 23:40:05,923 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 23:40:05,925 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 23:40:05,928 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-20 23:40:10,334 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 23:40:10,356 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 23:40:10,356 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-20 23:40:10,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:10 BoogieIcfgContainer [2021-11-20 23:40:10,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 23:40:10,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 23:40:10,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 23:40:10,365 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 23:40:10,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:40:04" (1/3) ... [2021-11-20 23:40:10,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c89eba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:40:10, skipping insertion in model container [2021-11-20 23:40:10,374 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:40:05" (2/3) ... [2021-11-20 23:40:10,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c89eba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:40:10, skipping insertion in model container [2021-11-20 23:40:10,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:40:10" (3/3) ... [2021-11-20 23:40:10,376 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-1.i [2021-11-20 23:40:10,382 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 23:40:10,382 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2021-11-20 23:40:10,429 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 23:40:10,437 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 [2021-11-20 23:40:10,437 INFO L340 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2021-11-20 23:40:10,469 INFO L276 IsEmpty]: Start isEmpty. Operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:10,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 23:40:10,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:10,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 23:40:10,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:10,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2021-11-20 23:40:10,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:10,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054677187] [2021-11-20 23:40:10,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:10,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:10,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:10,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:10,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 23:40:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:10,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:40:10,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:10,763 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 [2021-11-20 23:40:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:10,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:10,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:10,806 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:10,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054677187] [2021-11-20 23:40:10,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054677187] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:10,807 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:10,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:40:10,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619554442] [2021-11-20 23:40:10,810 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:10,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:40:10,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:10,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:40:10,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:40:10,881 INFO L87 Difference]: Start difference. First operand has 882 states, 443 states have (on average 2.216704288939052) internal successors, (982), 876 states have internal predecessors, (982), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-20 23:40:12,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:12,840 INFO L93 Difference]: Finished difference Result 869 states and 925 transitions. [2021-11-20 23:40:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:12,843 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 [2021-11-20 23:40:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:12,868 INFO L225 Difference]: With dead ends: 869 [2021-11-20 23:40:12,868 INFO L226 Difference]: Without dead ends: 867 [2021-11-20 23:40:12,870 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 [2021-11-20 23:40:12,875 INFO L933 BasicCegarLoop]: 535 mSDtfsCounter, 804 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:12,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 582 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-20 23:40:12,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2021-11-20 23:40:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 866. [2021-11-20 23:40:12,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 443 states have (on average 2.0474040632054176) internal successors, (907), 860 states have internal predecessors, (907), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 923 transitions. [2021-11-20 23:40:12,976 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 923 transitions. Word has length 3 [2021-11-20 23:40:12,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:12,977 INFO L470 AbstractCegarLoop]: Abstraction has 866 states and 923 transitions. [2021-11-20 23:40:12,977 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) [2021-11-20 23:40:12,977 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 923 transitions. [2021-11-20 23:40:12,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 23:40:12,978 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:12,978 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 23:40:12,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:13,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:13,189 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:13,190 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2021-11-20 23:40:13,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:13,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752477791] [2021-11-20 23:40:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:13,191 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:13,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:13,193 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:13,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 23:40:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:13,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:40:13,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:13,360 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 [2021-11-20 23:40:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:13,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:13,463 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:13,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752477791] [2021-11-20 23:40:13,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752477791] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:13,464 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:13,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 23:40:13,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786131327] [2021-11-20 23:40:13,464 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:13,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:40:13,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:40:13,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:40:13,467 INFO L87 Difference]: Start difference. First operand 866 states and 923 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) [2021-11-20 23:40:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:17,470 INFO L93 Difference]: Finished difference Result 1160 states and 1251 transitions. [2021-11-20 23:40:17,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:40:17,471 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 [2021-11-20 23:40:17,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:17,478 INFO L225 Difference]: With dead ends: 1160 [2021-11-20 23:40:17,478 INFO L226 Difference]: Without dead ends: 1160 [2021-11-20 23:40:17,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:40:17,480 INFO L933 BasicCegarLoop]: 687 mSDtfsCounter, 767 mSDsluCounter, 695 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:17,480 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 1382 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-11-20 23:40:17,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-11-20 23:40:17,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 901. [2021-11-20 23:40:17,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 487 states have (on average 2.024640657084189) internal successors, (986), 895 states have internal predecessors, (986), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1002 transitions. [2021-11-20 23:40:17,511 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1002 transitions. Word has length 3 [2021-11-20 23:40:17,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:17,512 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1002 transitions. [2021-11-20 23:40:17,512 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) [2021-11-20 23:40:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1002 transitions. [2021-11-20 23:40:17,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:40:17,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:17,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:17,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:17,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:17,716 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:17,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2021-11-20 23:40:17,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:17,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236315431] [2021-11-20 23:40:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:17,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:17,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:17,719 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:17,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 23:40:17,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:17,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:40:17,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:17,846 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 [2021-11-20 23:40:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:17,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:17,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:17,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236315431] [2021-11-20 23:40:17,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236315431] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:17,901 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:17,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 23:40:17,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226389190] [2021-11-20 23:40:17,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:17,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:40:17,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:17,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:40:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:40:17,903 INFO L87 Difference]: Start difference. First operand 901 states and 1002 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) [2021-11-20 23:40:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:19,456 INFO L93 Difference]: Finished difference Result 1078 states and 1206 transitions. [2021-11-20 23:40:19,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:19,457 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 [2021-11-20 23:40:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:19,464 INFO L225 Difference]: With dead ends: 1078 [2021-11-20 23:40:19,465 INFO L226 Difference]: Without dead ends: 1078 [2021-11-20 23:40:19,465 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 [2021-11-20 23:40:19,467 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 816 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:19,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 874 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 23:40:19,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2021-11-20 23:40:19,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 854. [2021-11-20 23:40:19,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 487 states have (on average 1.9219712525667352) internal successors, (936), 848 states have internal predecessors, (936), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:19,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 952 transitions. [2021-11-20 23:40:19,496 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 952 transitions. Word has length 8 [2021-11-20 23:40:19,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:19,496 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 952 transitions. [2021-11-20 23:40:19,497 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) [2021-11-20 23:40:19,497 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 952 transitions. [2021-11-20 23:40:19,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 23:40:19,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:19,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:19,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:19,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:19,705 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:19,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:19,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2021-11-20 23:40:19,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:19,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1560371724] [2021-11-20 23:40:19,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:19,707 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:19,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:19,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:19,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 23:40:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:19,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:40:19,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:19,859 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 [2021-11-20 23:40:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:19,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:20,001 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:20,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1560371724] [2021-11-20 23:40:20,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1560371724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:20,002 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:20,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 23:40:20,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500292126] [2021-11-20 23:40:20,002 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:20,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:40:20,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:20,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:40:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:40:20,004 INFO L87 Difference]: Start difference. First operand 854 states and 952 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) [2021-11-20 23:40:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:23,794 INFO L93 Difference]: Finished difference Result 1110 states and 1201 transitions. [2021-11-20 23:40:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:40:23,796 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 [2021-11-20 23:40:23,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:23,803 INFO L225 Difference]: With dead ends: 1110 [2021-11-20 23:40:23,804 INFO L226 Difference]: Without dead ends: 1110 [2021-11-20 23:40:23,804 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 [2021-11-20 23:40:23,808 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 544 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:23,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 1523 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-20 23:40:23,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2021-11-20 23:40:23,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 844. [2021-11-20 23:40:23,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 487 states have (on average 1.895277207392197) internal successors, (923), 838 states have internal predecessors, (923), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 939 transitions. [2021-11-20 23:40:23,848 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 939 transitions. Word has length 8 [2021-11-20 23:40:23,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:23,849 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 939 transitions. [2021-11-20 23:40:23,849 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) [2021-11-20 23:40:23,849 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 939 transitions. [2021-11-20 23:40:23,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-20 23:40:23,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:23,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:23,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:24,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:24,061 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:24,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:24,062 INFO L85 PathProgramCache]: Analyzing trace with hash 2106311903, now seen corresponding path program 1 times [2021-11-20 23:40:24,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:24,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1363026482] [2021-11-20 23:40:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:24,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:24,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:24,064 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:24,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 23:40:24,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:24,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:40:24,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:24,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:40:24,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:40:24,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-20 23:40:24,302 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-20 23:40:24,302 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 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-20 23:40:24,383 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-20 23:40:24,383 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 [2021-11-20 23:40:24,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:24,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:24,466 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:24,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1363026482] [2021-11-20 23:40:24,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1363026482] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:24,466 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:24,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 23:40:24,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400772806] [2021-11-20 23:40:24,467 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:24,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:40:24,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:40:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:40:24,468 INFO L87 Difference]: Start difference. First operand 844 states and 939 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-20 23:40:26,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:26,119 INFO L93 Difference]: Finished difference Result 1061 states and 1185 transitions. [2021-11-20 23:40:26,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:40:26,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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 10 [2021-11-20 23:40:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:26,126 INFO L225 Difference]: With dead ends: 1061 [2021-11-20 23:40:26,126 INFO L226 Difference]: Without dead ends: 1061 [2021-11-20 23:40:26,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:40:26,127 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 237 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:26,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 3042 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-20 23:40:26,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1061 states. [2021-11-20 23:40:26,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1061 to 844. [2021-11-20 23:40:26,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 487 states have (on average 1.893223819301848) internal successors, (922), 838 states have internal predecessors, (922), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:26,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 938 transitions. [2021-11-20 23:40:26,151 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 938 transitions. Word has length 10 [2021-11-20 23:40:26,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:26,152 INFO L470 AbstractCegarLoop]: Abstraction has 844 states and 938 transitions. [2021-11-20 23:40:26,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 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) [2021-11-20 23:40:26,152 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 938 transitions. [2021-11-20 23:40:26,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 23:40:26,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:26,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:26,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:26,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:26,365 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:26,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2021-11-20 23:40:26,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:26,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381339776] [2021-11-20 23:40:26,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:26,366 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:26,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:26,367 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:26,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 23:40:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:26,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 23:40:26,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:26,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:26,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:26,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:26,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:26,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381339776] [2021-11-20 23:40:26,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381339776] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:26,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:26,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-20 23:40:26,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933484647] [2021-11-20 23:40:26,584 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:26,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:40:26,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:26,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:40:26,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:40:26,585 INFO L87 Difference]: Start difference. First operand 844 states and 938 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) [2021-11-20 23:40:26,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:26,639 INFO L93 Difference]: Finished difference Result 811 states and 904 transitions. [2021-11-20 23:40:26,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:26,640 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 [2021-11-20 23:40:26,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:26,645 INFO L225 Difference]: With dead ends: 811 [2021-11-20 23:40:26,645 INFO L226 Difference]: Without dead ends: 811 [2021-11-20 23:40:26,646 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 [2021-11-20 23:40:26,646 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 1556 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:26,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 841 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:40:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-11-20 23:40:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 802. [2021-11-20 23:40:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 469 states have (on average 1.8742004264392325) internal successors, (879), 796 states have internal predecessors, (879), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:26,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 895 transitions. [2021-11-20 23:40:26,668 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 895 transitions. Word has length 18 [2021-11-20 23:40:26,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:26,668 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 895 transitions. [2021-11-20 23:40:26,669 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) [2021-11-20 23:40:26,669 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 895 transitions. [2021-11-20 23:40:26,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-20 23:40:26,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:26,670 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] [2021-11-20 23:40:26,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:26,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:26,882 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:26,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:26,882 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2021-11-20 23:40:26,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:26,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313595590] [2021-11-20 23:40:26,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:26,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:26,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:26,884 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:26,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 23:40:27,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:27,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:40:27,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:27,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:27,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:27,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:27,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313595590] [2021-11-20 23:40:27,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313595590] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:27,098 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:27,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-20 23:40:27,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531235360] [2021-11-20 23:40:27,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:27,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:40:27,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:27,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:40:27,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:40:27,100 INFO L87 Difference]: Start difference. First operand 802 states and 895 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) [2021-11-20 23:40:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:27,193 INFO L93 Difference]: Finished difference Result 790 states and 876 transitions. [2021-11-20 23:40:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:40:27,194 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 [2021-11-20 23:40:27,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:27,198 INFO L225 Difference]: With dead ends: 790 [2021-11-20 23:40:27,199 INFO L226 Difference]: Without dead ends: 790 [2021-11-20 23:40:27,199 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 [2021-11-20 23:40:27,200 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 1488 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:27,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 1553 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:40:27,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-20 23:40:27,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 780. [2021-11-20 23:40:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 461 states have (on average 1.8438177874186552) internal successors, (850), 774 states have internal predecessors, (850), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:27,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 866 transitions. [2021-11-20 23:40:27,221 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 866 transitions. Word has length 20 [2021-11-20 23:40:27,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:27,221 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 866 transitions. [2021-11-20 23:40:27,221 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) [2021-11-20 23:40:27,222 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 866 transitions. [2021-11-20 23:40:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 23:40:27,223 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:27,223 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] [2021-11-20 23:40:27,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:27,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:27,439 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:27,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:27,440 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2021-11-20 23:40:27,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:27,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453752304] [2021-11-20 23:40:27,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:27,441 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:27,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:27,443 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:27,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 23:40:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:27,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:40:27,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:27,593 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 [2021-11-20 23:40:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:27,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:27,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:27,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:27,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453752304] [2021-11-20 23:40:27,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453752304] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:27,828 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:27,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:40:27,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161224972] [2021-11-20 23:40:27,828 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:27,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:40:27,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:27,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:40:27,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:40:27,829 INFO L87 Difference]: Start difference. First operand 780 states and 866 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) [2021-11-20 23:40:29,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:29,287 INFO L93 Difference]: Finished difference Result 1012 states and 1128 transitions. [2021-11-20 23:40:29,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:40:29,288 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 [2021-11-20 23:40:29,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:29,293 INFO L225 Difference]: With dead ends: 1012 [2021-11-20 23:40:29,293 INFO L226 Difference]: Without dead ends: 1012 [2021-11-20 23:40:29,293 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 [2021-11-20 23:40:29,294 INFO L933 BasicCegarLoop]: 413 mSDtfsCounter, 1362 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1362 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:29,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1362 Valid, 786 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:40:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-11-20 23:40:29,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 776. [2021-11-20 23:40:29,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 461 states have (on average 1.8351409978308026) internal successors, (846), 770 states have internal predecessors, (846), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 862 transitions. [2021-11-20 23:40:29,317 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 862 transitions. Word has length 34 [2021-11-20 23:40:29,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:29,318 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 862 transitions. [2021-11-20 23:40:29,318 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) [2021-11-20 23:40:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 862 transitions. [2021-11-20 23:40:29,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-20 23:40:29,319 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:29,319 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] [2021-11-20 23:40:29,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-20 23:40:29,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:29,531 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:29,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:29,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2021-11-20 23:40:29,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:29,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917766646] [2021-11-20 23:40:29,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:29,532 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:29,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:29,533 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:29,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 23:40:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:29,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:40:29,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:29,690 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 [2021-11-20 23:40:29,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:29,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:30,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:30,398 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:30,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917766646] [2021-11-20 23:40:30,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917766646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:30,398 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:30,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:40:30,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594111377] [2021-11-20 23:40:30,398 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:30,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:40:30,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:30,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:40:30,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:40:30,400 INFO L87 Difference]: Start difference. First operand 776 states and 862 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) [2021-11-20 23:40:35,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:35,288 INFO L93 Difference]: Finished difference Result 1050 states and 1132 transitions. [2021-11-20 23:40:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:40:35,290 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 [2021-11-20 23:40:35,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:35,295 INFO L225 Difference]: With dead ends: 1050 [2021-11-20 23:40:35,295 INFO L226 Difference]: Without dead ends: 1050 [2021-11-20 23:40:35,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:40:35,297 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1702 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1248 SdHoareTripleChecker+Invalid, 924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:35,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1702 Valid, 1248 Invalid, 924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 23:40:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-11-20 23:40:35,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 772. [2021-11-20 23:40:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 461 states have (on average 1.82646420824295) internal successors, (842), 766 states have internal predecessors, (842), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:35,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 858 transitions. [2021-11-20 23:40:35,319 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 858 transitions. Word has length 34 [2021-11-20 23:40:35,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:35,320 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 858 transitions. [2021-11-20 23:40:35,320 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) [2021-11-20 23:40:35,320 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 858 transitions. [2021-11-20 23:40:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-20 23:40:35,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:35,322 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] [2021-11-20 23:40:35,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:35,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:35,534 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:35,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2021-11-20 23:40:35,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:35,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019687977] [2021-11-20 23:40:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:35,536 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:35,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:35,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 23:40:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:35,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:40:35,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:35,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:35,956 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:35,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019687977] [2021-11-20 23:40:35,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019687977] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:35,957 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:35,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 23:40:35,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053996092] [2021-11-20 23:40:35,957 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:35,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 23:40:35,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:35,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 23:40:35,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 23:40:35,959 INFO L87 Difference]: Start difference. First operand 772 states and 858 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:36,025 INFO L93 Difference]: Finished difference Result 775 states and 857 transitions. [2021-11-20 23:40:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:40:36,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-11-20 23:40:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:36,030 INFO L225 Difference]: With dead ends: 775 [2021-11-20 23:40:36,030 INFO L226 Difference]: Without dead ends: 775 [2021-11-20 23:40:36,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:40:36,031 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 725 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:36,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [733 Valid, 1531 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 23:40:36,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2021-11-20 23:40:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 766. [2021-11-20 23:40:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 455 states have (on average 1.8285714285714285) internal successors, (832), 760 states have internal predecessors, (832), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-20 23:40:36,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 848 transitions. [2021-11-20 23:40:36,052 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 848 transitions. Word has length 49 [2021-11-20 23:40:36,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:36,053 INFO L470 AbstractCegarLoop]: Abstraction has 766 states and 848 transitions. [2021-11-20 23:40:36,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 23:40:36,053 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 848 transitions. [2021-11-20 23:40:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-20 23:40:36,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:36,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 23:40:36,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:36,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:36,275 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:36,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:36,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2021-11-20 23:40:36,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:36,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166259193] [2021-11-20 23:40:36,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:36,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:36,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:36,278 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:36,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 23:40:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:36,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:40:36,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:36,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:36,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:37,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:37,266 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:37,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166259193] [2021-11-20 23:40:37,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166259193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:37,266 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:37,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 23:40:37,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711183977] [2021-11-20 23:40:37,267 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:37,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 23:40:37,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:37,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 23:40:37,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:40:37,268 INFO L87 Difference]: Start difference. First operand 766 states and 848 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-20 23:40:37,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:37,403 INFO L93 Difference]: Finished difference Result 966 states and 1070 transitions. [2021-11-20 23:40:37,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 23:40:37,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-20 23:40:37,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:37,408 INFO L225 Difference]: With dead ends: 966 [2021-11-20 23:40:37,408 INFO L226 Difference]: Without dead ends: 966 [2021-11-20 23:40:37,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 23:40:37,409 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 229 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1547 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:37,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 1547 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:40:37,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-20 23:40:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 911. [2021-11-20 23:40:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 595 states have (on average 1.749579831932773) internal successors, (1041), 905 states have internal predecessors, (1041), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 23:40:37,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1067 transitions. [2021-11-20 23:40:37,433 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1067 transitions. Word has length 57 [2021-11-20 23:40:37,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:37,433 INFO L470 AbstractCegarLoop]: Abstraction has 911 states and 1067 transitions. [2021-11-20 23:40:37,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-20 23:40:37,434 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1067 transitions. [2021-11-20 23:40:37,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-20 23:40:37,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:37,435 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] [2021-11-20 23:40:37,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:37,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:37,657 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:37,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:37,658 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2021-11-20 23:40:37,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:37,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784796165] [2021-11-20 23:40:37,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:37,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:37,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:37,660 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:37,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 23:40:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:37,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:40:37,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:37,977 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 [2021-11-20 23:40:37,985 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 [2021-11-20 23:40:38,636 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 23:40:38,636 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 28 treesize of output 30 [2021-11-20 23:40:38,642 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 23:40:38,643 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 27 treesize of output 23 [2021-11-20 23:40:38,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:38,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:43,546 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:43,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784796165] [2021-11-20 23:40:43,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784796165] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:43,547 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:43,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:40:43,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183808873] [2021-11-20 23:40:43,547 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:43,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:40:43,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:43,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:40:43,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 23:40:43,549 INFO L87 Difference]: Start difference. First operand 911 states and 1067 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) [2021-11-20 23:40:47,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:47,771 INFO L93 Difference]: Finished difference Result 1391 states and 1625 transitions. [2021-11-20 23:40:47,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 23:40:47,772 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 [2021-11-20 23:40:47,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:47,779 INFO L225 Difference]: With dead ends: 1391 [2021-11-20 23:40:47,779 INFO L226 Difference]: Without dead ends: 1391 [2021-11-20 23:40:47,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-20 23:40:47,780 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 1150 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1164 SdHoareTripleChecker+Valid, 1535 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1127 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:47,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1164 Valid, 1535 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1119 Invalid, 0 Unknown, 1127 Unchecked, 4.1s Time] [2021-11-20 23:40:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2021-11-20 23:40:47,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 889. [2021-11-20 23:40:47,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 605 states have (on average 1.6975206611570248) internal successors, (1027), 883 states have internal predecessors, (1027), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 23:40:47,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1053 transitions. [2021-11-20 23:40:47,807 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1053 transitions. Word has length 60 [2021-11-20 23:40:47,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:47,808 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1053 transitions. [2021-11-20 23:40:47,809 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) [2021-11-20 23:40:47,809 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1053 transitions. [2021-11-20 23:40:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-20 23:40:47,812 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:47,812 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] [2021-11-20 23:40:47,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:48,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:48,034 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:48,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1192602638, now seen corresponding path program 1 times [2021-11-20 23:40:48,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:48,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1715015411] [2021-11-20 23:40:48,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:48,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:48,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:48,036 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:48,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 23:40:48,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:48,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:40:48,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:48,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:48,530 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 [2021-11-20 23:40:48,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:48,850 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:48,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1715015411] [2021-11-20 23:40:48,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1715015411] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:48,850 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:48,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 23:40:48,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120374312] [2021-11-20 23:40:48,850 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:48,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:40:48,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:40:48,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:40:48,852 INFO L87 Difference]: Start difference. First operand 889 states and 1053 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) [2021-11-20 23:40:50,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:50,260 INFO L93 Difference]: Finished difference Result 887 states and 1051 transitions. [2021-11-20 23:40:50,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 23:40:50,260 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 [2021-11-20 23:40:50,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:50,264 INFO L225 Difference]: With dead ends: 887 [2021-11-20 23:40:50,264 INFO L226 Difference]: Without dead ends: 887 [2021-11-20 23:40:50,264 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 [2021-11-20 23:40:50,265 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 706 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:50,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 454 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 23:40:50,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2021-11-20 23:40:50,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2021-11-20 23:40:50,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 605 states have (on average 1.6942148760330578) internal successors, (1025), 881 states have internal predecessors, (1025), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 23:40:50,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1051 transitions. [2021-11-20 23:40:50,286 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1051 transitions. Word has length 62 [2021-11-20 23:40:50,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:50,286 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1051 transitions. [2021-11-20 23:40:50,286 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) [2021-11-20 23:40:50,287 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1051 transitions. [2021-11-20 23:40:50,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 23:40:50,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:50,288 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] [2021-11-20 23:40:50,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-20 23:40:50,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:50,501 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:50,501 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2021-11-20 23:40:50,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:50,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [968963735] [2021-11-20 23:40:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:50,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:50,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:50,504 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:50,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 23:40:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:50,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 23:40:50,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:50,816 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 [2021-11-20 23:40:50,830 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 [2021-11-20 23:40:50,870 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 [2021-11-20 23:40:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:50,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:51,012 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [968963735] [2021-11-20 23:40:51,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [968963735] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:51,012 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:51,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 23:40:51,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422947923] [2021-11-20 23:40:51,013 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:51,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 23:40:51,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:51,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 23:40:51,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 23:40:51,014 INFO L87 Difference]: Start difference. First operand 887 states and 1051 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) [2021-11-20 23:40:53,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:40:53,271 INFO L93 Difference]: Finished difference Result 886 states and 1050 transitions. [2021-11-20 23:40:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:40:53,271 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 [2021-11-20 23:40:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:40:53,276 INFO L225 Difference]: With dead ends: 886 [2021-11-20 23:40:53,276 INFO L226 Difference]: Without dead ends: 886 [2021-11-20 23:40:53,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-20 23:40:53,276 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 4 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 1005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 23:40:53,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1889 Invalid, 1005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 23:40:53,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2021-11-20 23:40:53,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 886. [2021-11-20 23:40:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 605 states have (on average 1.6925619834710743) internal successors, (1024), 880 states have internal predecessors, (1024), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 23:40:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1050 transitions. [2021-11-20 23:40:53,298 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1050 transitions. Word has length 65 [2021-11-20 23:40:53,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:40:53,298 INFO L470 AbstractCegarLoop]: Abstraction has 886 states and 1050 transitions. [2021-11-20 23:40:53,298 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) [2021-11-20 23:40:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1050 transitions. [2021-11-20 23:40:53,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-20 23:40:53,299 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:40:53,299 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] [2021-11-20 23:40:53,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 23:40:53,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:40:53,513 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:40:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:40:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2021-11-20 23:40:53,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:40:53,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167089583] [2021-11-20 23:40:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:40:53,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:40:53,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:40:53,515 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:40:53,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 23:40:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:40:53,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 23:40:53,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:40:53,846 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 [2021-11-20 23:40:53,871 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 [2021-11-20 23:40:53,882 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 [2021-11-20 23:40:53,934 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 [2021-11-20 23:40:53,937 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 [2021-11-20 23:40:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:53,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:40:54,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:40:54,280 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:40:54,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167089583] [2021-11-20 23:40:54,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167089583] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:40:54,280 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:40:54,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-20 23:40:54,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556890561] [2021-11-20 23:40:54,280 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:40:54,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 23:40:54,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:40:54,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 23:40:54,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-20 23:40:54,282 INFO L87 Difference]: Start difference. First operand 886 states and 1050 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) [2021-11-20 23:41:00,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:00,823 INFO L93 Difference]: Finished difference Result 885 states and 1049 transitions. [2021-11-20 23:41:00,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:41:00,824 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 [2021-11-20 23:41:00,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:00,829 INFO L225 Difference]: With dead ends: 885 [2021-11-20 23:41:00,829 INFO L226 Difference]: Without dead ends: 885 [2021-11-20 23:41:00,830 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 [2021-11-20 23:41:00,831 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 3 mSDsluCounter, 1953 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2675 SdHoareTripleChecker+Invalid, 1660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:00,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2675 Invalid, 1660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2021-11-20 23:41:00,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2021-11-20 23:41:00,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2021-11-20 23:41:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 604 states have (on average 1.6937086092715232) internal successors, (1023), 879 states have internal predecessors, (1023), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-20 23:41:00,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1049 transitions. [2021-11-20 23:41:00,860 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1049 transitions. Word has length 65 [2021-11-20 23:41:00,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:00,861 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1049 transitions. [2021-11-20 23:41:00,861 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) [2021-11-20 23:41:00,861 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1049 transitions. [2021-11-20 23:41:00,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-20 23:41:00,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:00,862 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] [2021-11-20 23:41:00,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 23:41:01,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:41:01,075 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:41:01,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1478911951, now seen corresponding path program 1 times [2021-11-20 23:41:01,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:41:01,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925596476] [2021-11-20 23:41:01,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:01,076 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:41:01,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:41:01,077 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:41:01,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 23:41:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:01,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 23:41:01,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:01,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:01,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:01,556 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:41:01,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925596476] [2021-11-20 23:41:01,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925596476] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 23:41:01,556 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 23:41:01,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-20 23:41:01,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624366116] [2021-11-20 23:41:01,557 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 23:41:01,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 23:41:01,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:41:01,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 23:41:01,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 23:41:01,558 INFO L87 Difference]: Start difference. First operand 885 states and 1049 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) [2021-11-20 23:41:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:01,677 INFO L93 Difference]: Finished difference Result 895 states and 1062 transitions. [2021-11-20 23:41:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 23:41:01,678 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 [2021-11-20 23:41:01,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:01,688 INFO L225 Difference]: With dead ends: 895 [2021-11-20 23:41:01,688 INFO L226 Difference]: Without dead ends: 895 [2021-11-20 23:41:01,688 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 [2021-11-20 23:41:01,689 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 7 mSDsluCounter, 2155 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:01,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 2877 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 23:41:01,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-20 23:41:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-11-20 23:41:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 612 states have (on average 1.6911764705882353) internal successors, (1035), 888 states have internal predecessors, (1035), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-20 23:41:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1062 transitions. [2021-11-20 23:41:01,719 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1062 transitions. Word has length 73 [2021-11-20 23:41:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:01,719 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1062 transitions. [2021-11-20 23:41:01,719 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) [2021-11-20 23:41:01,720 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1062 transitions. [2021-11-20 23:41:01,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-20 23:41:01,720 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:01,721 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] [2021-11-20 23:41:01,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 23:41:01,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-20 23:41:01,935 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:41:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 165650223, now seen corresponding path program 1 times [2021-11-20 23:41:01,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:41:01,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1443227794] [2021-11-20 23:41:01,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:01,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:41:01,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:41:01,938 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:41:01,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 23:41:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:02,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:41:02,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:02,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:02,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:02,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:41:02,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1443227794] [2021-11-20 23:41:02,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1443227794] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:41:02,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1659159145] [2021-11-20 23:41:02,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:02,627 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:41:02,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:41:02,633 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:41:02,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-20 23:41:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:02,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 23:41:03,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:03,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:03,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1659159145] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:41:03,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318411528] [2021-11-20 23:41:03,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 23:41:03,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:41:03,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:41:03,287 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:41:03,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-20 23:41:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 23:41:03,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 23:41:03,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:03,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:03,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318411528] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:41:03,924 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-20 23:41:03,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 14 [2021-11-20 23:41:03,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227503070] [2021-11-20 23:41:03,924 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-20 23:41:03,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 23:41:03,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:41:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 23:41:03,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2021-11-20 23:41:03,926 INFO L87 Difference]: Start difference. First operand 895 states and 1062 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) [2021-11-20 23:41:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:41:04,433 INFO L93 Difference]: Finished difference Result 909 states and 1079 transitions. [2021-11-20 23:41:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 23:41:04,434 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 [2021-11-20 23:41:04,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:41:04,438 INFO L225 Difference]: With dead ends: 909 [2021-11-20 23:41:04,438 INFO L226 Difference]: Without dead ends: 903 [2021-11-20 23:41:04,438 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 [2021-11-20 23:41:04,439 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 31 mSDsluCounter, 3595 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 23:41:04,439 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 4318 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 23:41:04,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2021-11-20 23:41:04,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 901. [2021-11-20 23:41:04,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 618 states have (on average 1.686084142394822) internal successors, (1042), 894 states have internal predecessors, (1042), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-20 23:41:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1069 transitions. [2021-11-20 23:41:04,460 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1069 transitions. Word has length 75 [2021-11-20 23:41:04,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:41:04,461 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1069 transitions. [2021-11-20 23:41:04,461 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) [2021-11-20 23:41:04,461 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1069 transitions. [2021-11-20 23:41:04,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-20 23:41:04,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:41:04,463 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] [2021-11-20 23:41:04,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-20 23:41:04,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-20 23:41:04,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-11-20 23:41:05,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-20 23:41:05,092 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:41:05,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:41:05,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1807156719, now seen corresponding path program 2 times [2021-11-20 23:41:05,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:41:05,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242619586] [2021-11-20 23:41:05,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:41:05,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:41:05,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:41:05,094 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:41:05,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 23:41:05,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:41:05,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:41:05,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:41:05,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:05,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:06,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:41:06,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242619586] [2021-11-20 23:41:06,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242619586] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:41:06,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [943869575] [2021-11-20 23:41:06,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:41:06,197 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:41:06,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:41:06,198 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:41:06,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-11-20 23:41:06,938 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:41:06,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:41:06,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 23:41:06,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:07,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:41:07,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:41:07,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [943869575] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:41:07,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498924211] [2021-11-20 23:41:07,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 23:41:07,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:41:07,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:41:07,306 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:41:07,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-20 23:41:37,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 23:41:37,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:41:37,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 23:41:37,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:41:37,146 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 [2021-11-20 23:41:37,427 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-20 23:41:37,427 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 13 treesize of output 13 [2021-11-20 23:41:37,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2021-11-20 23:41:37,500 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 [2021-11-20 23:41:37,509 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 [2021-11-20 23:41:37,704 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 [2021-11-20 23:41:37,708 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 [2021-11-20 23:43:41,532 WARN L227 SmtUtils]: Spent 20.08s 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) [2021-11-20 23:43:41,533 INFO L354 Elim1Store]: treesize reduction 884, result has 5.9 percent of original size [2021-11-20 23:43:41,533 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 [2021-11-20 23:43:53,920 WARN L227 SmtUtils]: Spent 12.37s on a formula simplification. DAG size of input: 118 DAG size of output: 38 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 23:43:53,925 INFO L354 Elim1Store]: treesize reduction 1178, result has 7.5 percent of original size [2021-11-20 23:43:53,926 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 226 [2021-11-20 23:44:01,125 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-20 23:44:01,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 8 new quantified variables, introduced 21 case distinctions, treesize of input 241 treesize of output 118 [2021-11-20 23:44:01,144 INFO L354 Elim1Store]: treesize reduction 276, result has 0.4 percent of original size [2021-11-20 23:44:01,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 94 treesize of output 46 [2021-11-20 23:44:13,253 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 14 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:44:13,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:45:29,141 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32))) (let ((.cse1 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse2 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse2) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse1 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse2)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse9 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 .cse4) .cse5 .cse4) .cse6 .cse4) .cse7 .cse4) .cse8 .cse4) .cse9 .cse4))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse3 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32)) .cse9 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse10)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse11 (select (select (store |c_old(#memory_$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|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse12))) |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) .cse11) (bvadd .cse11 (_ bv20 32)))))))) is different from false [2021-11-20 23:46:41,085 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse0 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse2 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse3 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse4 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse5 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse6 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$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$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 .cse1) .cse2 .cse1) .cse3 .cse1) .cse4 .cse1) .cse5 .cse1) .cse6 .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32)) .cse2 (_ bv0 32)) .cse3 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse8) (bvadd .cse8 (_ bv20 32)))))) (and (forall ((|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse10 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse11) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse10) (bvadd .cse10 (_ bv20 32))))) (forall ((v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse12 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse14 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse15 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse16 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse13 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse12 .cse13) .cse14 .cse13) .cse15 .cse13))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse12 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse16)))))))) is different from true [2021-11-20 23:46:46,791 WARN L860 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_1 (_ BitVec 32))) (let ((.cse2 (bvadd |c_#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse4 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse5 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse6 (bvadd |c_#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse7 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |c_#Ultimate.C_memset_#value|)))) (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse7)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse8 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse11 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse9 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 .cse9) .cse10 .cse9) .cse11 .cse9) .cse12 .cse9) .cse13 .cse9) .cse14 .cse9))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse8 (_ bv0 32)) .cse10 (_ bv0 32)) .cse11 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse15)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse16 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse17 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse17) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .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 [2021-11-20 23:48:20,847 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2| (_ BitVec 32)) (|v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2| (_ BitVec 32))) (or (and (forall ((v_subst_5 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_3 (_ BitVec 32)) (v_subst_2 (_ BitVec 32)) (v_subst_9 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32)) (v_subst_7 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse1 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_9) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_7) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_5) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_3) .cse1) (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_2) .cse1))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|)))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_subst_6 (_ BitVec 32)) (v_subst_4 (_ BitVec 32)) (|#Ultimate.C_memset_#t~loopctr192| (_ BitVec 32)) (v_subst_10 (_ BitVec 32)) (v_subst_1 (_ BitVec 32)) (v_subst_8 (_ BitVec 32)) (|#Ultimate.C_memset_#ptr.offset| (_ BitVec 32)) (|#Ultimate.C_memset_#value| (_ BitVec 32))) (let ((.cse2 (bvadd |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr192|)) (.cse4 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_10)) (.cse5 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_8)) (.cse6 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_6)) (.cse7 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_4)) (.cse8 (bvadd |#Ultimate.C_memset_#ptr.offset| v_subst_1)) (.cse9 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse3 ((_ zero_extend 24) ((_ extract 7 0) |#Ultimate.C_memset_#value|)))) (store (store (store (store (store (store (select |c_#memory_$Pointer$.offset| |c_#Ultimate.C_memset_#ptr.base|) .cse2 .cse3) .cse4 .cse3) .cse5 .cse3) .cse6 .cse3) .cse7 .cse3) .cse8 .cse3))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_#memory_$Pointer$.base| |c_#Ultimate.C_memset_#ptr.base|) .cse2 (_ bv0 32)) .cse4 (_ bv0 32)) .cse5 (_ bv0 32)) .cse6 (_ bv0 32)) .cse7 (_ bv0 32)) .cse8 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse9)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse10 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse12 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse13 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse14 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse15 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse16 (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|)) (.cse17 (bvadd (_ bv8 32) |v_ULTIMATE.start_main_~user~0#1.offset_BEFORE_CALL_2|))) (bvule (bvadd (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse11 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 .cse11) .cse12 .cse11) .cse13 .cse11) .cse14 .cse11) .cse15 .cse11) .cse16 .cse11))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17) (_ bv20 32)) (select |c_#length| (select (select (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base|) .cse10 (_ bv0 32)) .cse12 (_ bv0 32)) .cse13 (_ bv0 32)) .cse14 (_ bv0 32)) .cse15 (_ bv0 32)) .cse16 (_ bv0 32))) |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_2|) .cse17)))))) (exists ((|v_#Ultimate.C_memset_#t~loopctr192_105| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_106| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_103| (_ BitVec 32)) (|v_#Ultimate.C_memset_#value_16| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_104| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_109| (_ BitVec 32)) (|v_#Ultimate.C_memset_#ptr.offset_18| (_ BitVec 32)) (|v_#Ultimate.C_memset_#t~loopctr192_108| (_ BitVec 32))) (not (let ((.cse18 (select (select (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| (let ((.cse19 ((_ zero_extend 24) ((_ extract 7 0) |v_#Ultimate.C_memset_#value_16|)))) (store (store (store (store (store (store (select |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base|) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_108| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_103| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_105| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_104| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_106| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19) (bvadd |v_#Ultimate.C_memset_#t~loopctr192_109| |v_#Ultimate.C_memset_#ptr.offset_18|) .cse19))) |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) .cse18) (bvadd .cse18 (_ bv20 32)))))))) is different from false [2021-11-20 23:49:06,365 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-20 23:49:06,365 INFO L186 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2021-11-20 23:49:06,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 18 [2021-11-20 23:49:06,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675018171] [2021-11-20 23:49:06,366 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2021-11-20 23:49:06,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 23:49:06,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-20 23:49:06,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 23:49:06,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1125, Unknown=125, NotChecked=300, Total=1722 [2021-11-20 23:49:06,368 INFO L87 Difference]: Start difference. First operand 901 states and 1069 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) [2021-11-20 23:49:50,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 23:49:50,092 INFO L93 Difference]: Finished difference Result 927 states and 1105 transitions. [2021-11-20 23:49:50,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 23:49:50,093 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 [2021-11-20 23:49:50,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 23:49:50,097 INFO L225 Difference]: With dead ends: 927 [2021-11-20 23:49:50,098 INFO L226 Difference]: Without dead ends: 923 [2021-11-20 23:49:50,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 409.9s TimeCoverageRelationStatistics Valid=513, Invalid=2562, Unknown=133, NotChecked=452, Total=3660 [2021-11-20 23:49:50,100 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 81 mSDsluCounter, 5066 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 5793 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 23:49:50,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 5793 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 23:49:50,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2021-11-20 23:49:50,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 913. [2021-11-20 23:49:50,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 630 states have (on average 1.6793650793650794) internal successors, (1058), 906 states have internal predecessors, (1058), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2021-11-20 23:49:50,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1085 transitions. [2021-11-20 23:49:50,137 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1085 transitions. Word has length 79 [2021-11-20 23:49:50,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 23:49:50,137 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1085 transitions. [2021-11-20 23:49:50,138 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) [2021-11-20 23:49:50,138 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1085 transitions. [2021-11-20 23:49:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-20 23:49:50,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 23:49:50,139 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] [2021-11-20 23:49:50,147 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-11-20 23:49:50,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 23:49:50,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-11-20 23:49:50,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:50,744 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 427 more)] === [2021-11-20 23:49:50,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 23:49:50,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1000230033, now seen corresponding path program 3 times [2021-11-20 23:49:50,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-20 23:49:50,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761800270] [2021-11-20 23:49:50,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:49:50,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 23:49:50,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-20 23:49:50,746 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 23:49:50,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-20 23:49:51,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 23:49:51,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:49:51,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 23:49:51,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:49:52,021 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:49:52,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:49:53,894 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:49:53,895 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-20 23:49:53,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761800270] [2021-11-20 23:49:53,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761800270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:49:53,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1104880944] [2021-11-20 23:49:53,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:49:53,895 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-20 23:49:53,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-20 23:49:53,910 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-20 23:49:53,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2021-11-20 23:49:55,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-20 23:49:55,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 23:49:55,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-20 23:49:55,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 23:49:56,069 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:49:56,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 23:49:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 23:49:56,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1104880944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 23:49:56,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016310957] [2021-11-20 23:49:56,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-20 23:49:56,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 23:49:56,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 [2021-11-20 23:49:56,563 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 23:49:56,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06e6dcba-742e-490b-a9f7-55e0bccf87ae/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process