./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH --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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:28:17,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:28:17,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:28:17,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:28:17,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:28:17,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:28:17,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:28:17,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:28:17,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:28:17,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:28:17,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:28:17,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:28:17,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:28:17,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:28:17,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:28:17,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:28:17,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:28:17,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:28:17,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:28:17,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:28:17,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:28:17,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:28:17,544 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:28:17,545 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:28:17,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:28:17,549 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:28:17,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:28:17,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:28:17,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:28:17,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:28:17,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:28:17,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:28:17,554 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:28:17,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:28:17,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:28:17,556 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:28:17,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:28:17,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:28:17,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:28:17,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:28:17,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:28:17,567 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-03 05:28:17,614 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:28:17,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:28:17,615 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:28:17,616 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:28:17,616 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:28:17,616 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:28:17,616 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:28:17,617 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:28:17,617 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:28:17,617 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:28:17,618 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:28:17,619 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:28:17,619 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:28:17,619 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:28:17,619 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:28:17,620 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:28:17,620 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:28:17,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:28:17,621 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:28:17,621 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:28:17,621 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:28:17,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:28:17,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:28:17,622 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:28:17,622 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:28:17,623 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:28:17,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:28:17,623 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:28:17,623 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:28:17,623 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:28:17,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:28:17,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:28:17,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:28:17,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:28:17,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:28:17,625 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:28:17,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:28:17,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:28:17,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:28:17,626 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_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-03 05:28:17,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:28:17,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:28:17,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:28:17,924 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:28:17,924 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:28:17,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-03 05:28:17,995 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data/206b2f997/ced37aae8c68494eb2c32d59b687a69d/FLAG6a5f2e5f5 [2021-11-03 05:28:18,644 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:28:18,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-03 05:28:18,674 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data/206b2f997/ced37aae8c68494eb2c32d59b687a69d/FLAG6a5f2e5f5 [2021-11-03 05:28:18,922 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data/206b2f997/ced37aae8c68494eb2c32d59b687a69d [2021-11-03 05:28:18,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:28:18,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:28:18,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:28:18,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:28:18,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:28:18,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:28:18" (1/1) ... [2021-11-03 05:28:18,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1350acff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:18, skipping insertion in model container [2021-11-03 05:28:18,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:28:18" (1/1) ... [2021-11-03 05:28:18,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:28:18,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:28:19,433 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-03 05:28:19,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:28:19,517 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) [2021-11-03 05:28:19,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4a9b9251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:19, skipping insertion in model container [2021-11-03 05:28:19,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:28:19,518 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:28:19,520 INFO L168 Benchmark]: Toolchain (without parser) took 593.31 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 121.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:28:19,520 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory is still 39.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:28:19,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.67 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 121.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:28:19,523 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 81.8 MB. Free memory is still 39.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 590.67 ms. Allocated memory is still 155.2 MB. Free memory was 119.0 MB in the beginning and 121.3 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH --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 a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:28:21,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:28:21,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:28:21,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:28:21,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:28:21,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:28:21,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:28:21,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:28:21,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:28:21,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:28:21,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:28:21,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:28:21,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:28:21,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:28:21,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:28:21,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:28:21,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:28:21,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:28:21,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:28:21,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:28:21,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:28:21,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:28:21,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:28:21,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:28:21,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:28:21,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:28:21,778 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:28:21,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:28:21,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:28:21,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:28:21,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:28:21,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:28:21,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:28:21,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:28:21,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:28:21,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:28:21,786 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:28:21,786 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:28:21,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:28:21,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:28:21,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:28:21,789 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-03 05:28:21,816 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:28:21,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:28:21,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:28:21,817 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:28:21,818 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:28:21,818 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:28:21,818 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:28:21,818 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:28:21,818 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:28:21,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 05:28:21,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 05:28:21,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:28:21,820 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:28:21,820 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-03 05:28:21,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:28:21,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:28:21,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:28:21,821 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-03 05:28:21,821 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-03 05:28:21,822 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-03 05:28:21,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:28:21,822 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:28:21,822 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:28:21,823 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:28:21,823 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:28:21,823 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:28:21,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:28:21,824 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:28:21,824 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:28:21,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:28:21,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:28:21,825 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:28:21,825 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:28:21,825 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:28:21,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:28:21,826 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:28:21,826 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_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a74358cfc3b57ddf641c2843362a5594690e287c76148ee1838c9104dbe09de1 [2021-11-03 05:28:22,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:28:22,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:28:22,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:28:22,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:28:22,181 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:28:22,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-03 05:28:22,252 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data/a74c554ac/663d4cc508da488682dacdd5eb5b5ef1/FLAG87c6afe95 [2021-11-03 05:28:22,852 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:28:22,856 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i [2021-11-03 05:28:22,875 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data/a74c554ac/663d4cc508da488682dacdd5eb5b5ef1/FLAG87c6afe95 [2021-11-03 05:28:23,085 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/data/a74c554ac/663d4cc508da488682dacdd5eb5b5ef1 [2021-11-03 05:28:23,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:28:23,095 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:28:23,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:28:23,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:28:23,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:28:23,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:23,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37492404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23, skipping insertion in model container [2021-11-03 05:28:23,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:23,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:28:23,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:28:23,614 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-03 05:28:23,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:28:23,701 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:28:23,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:28:23,734 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-03 05:28:23,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:28:23,790 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:28:23,815 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-1.i[33021,33034] [2021-11-03 05:28:23,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:28:23,935 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:28:23,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23 WrapperNode [2021-11-03 05:28:23,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:28:23,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:28:23,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:28:23,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:28:23,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:23,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,021 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:28:24,022 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:28:24,028 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:28:24,028 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:28:24,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:28:24,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:28:24,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:28:24,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:28:24,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (1/1) ... [2021-11-03 05:28:24,141 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:28:24,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:28:24,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:28:24,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:28:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 05:28:24,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:28:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:28:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:28:24,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:28:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:28:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 05:28:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:28:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:28:24,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:28:24,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:28:27,420 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:28:27,421 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-03 05:28:27,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:28:27 BoogieIcfgContainer [2021-11-03 05:28:27,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:28:27,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:28:27,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:28:27,429 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:28:27,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:28:23" (1/3) ... [2021-11-03 05:28:27,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468fe448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:28:27, skipping insertion in model container [2021-11-03 05:28:27,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:28:23" (2/3) ... [2021-11-03 05:28:27,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468fe448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:28:27, skipping insertion in model container [2021-11-03 05:28:27,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:28:27" (3/3) ... [2021-11-03 05:28:27,432 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-1.i [2021-11-03 05:28:27,437 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:28:27,437 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 339 error locations. [2021-11-03 05:28:27,480 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:28:27,486 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 [2021-11-03 05:28:27,486 INFO L340 AbstractCegarLoop]: Starting to check reachability of 339 error locations. [2021-11-03 05:28:27,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 686 states, 346 states have (on average 2.222543352601156) internal successors, (769), 685 states have internal predecessors, (769), 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) [2021-11-03 05:28:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:28:27,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:27,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:28:27,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:27,538 INFO L85 PathProgramCache]: Analyzing trace with hash 28698764, now seen corresponding path program 1 times [2021-11-03 05:28:27,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:27,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138297401] [2021-11-03 05:28:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:27,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:27,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:27,556 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:27,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:28:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:27,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 05:28:27,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:27,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:27,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:27,807 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:27,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138297401] [2021-11-03 05:28:27,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138297401] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:27,808 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:27,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:28:27,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503845518] [2021-11-03 05:28:27,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 05:28:27,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:27,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 05:28:27,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:28:27,848 INFO L87 Difference]: Start difference. First operand has 686 states, 346 states have (on average 2.222543352601156) internal successors, (769), 685 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-03 05:28:27,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:27,934 INFO L93 Difference]: Finished difference Result 677 states and 715 transitions. [2021-11-03 05:28:27,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 05:28:27,935 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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 5 [2021-11-03 05:28:27,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:27,954 INFO L225 Difference]: With dead ends: 677 [2021-11-03 05:28:27,954 INFO L226 Difference]: Without dead ends: 675 [2021-11-03 05:28:27,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 05:28:27,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-11-03 05:28:28,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 675. [2021-11-03 05:28:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 341 states have (on average 2.090909090909091) internal successors, (713), 674 states have internal predecessors, (713), 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) [2021-11-03 05:28:28,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 713 transitions. [2021-11-03 05:28:28,098 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 713 transitions. Word has length 5 [2021-11-03 05:28:28,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:28,098 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 713 transitions. [2021-11-03 05:28:28,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 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) [2021-11-03 05:28:28,099 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 713 transitions. [2021-11-03 05:28:28,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:28:28,099 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:28,099 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:28:28,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:28:28,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:28,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash 28698826, now seen corresponding path program 1 times [2021-11-03 05:28:28,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:28,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035006502] [2021-11-03 05:28:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:28,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:28,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:28,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:28,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:28:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:28,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:28:28,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:28,473 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 [2021-11-03 05:28:28,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:28,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:28,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:28,515 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:28,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035006502] [2021-11-03 05:28:28,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035006502] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:28,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:28,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 05:28:28,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682207820] [2021-11-03 05:28:28,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:28:28,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:28,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:28:28,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:28:28,524 INFO L87 Difference]: Start difference. First operand 675 states and 713 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-03 05:28:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:29,863 INFO L93 Difference]: Finished difference Result 633 states and 672 transitions. [2021-11-03 05:28:29,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:28:29,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 5 [2021-11-03 05:28:29,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:29,875 INFO L225 Difference]: With dead ends: 633 [2021-11-03 05:28:29,876 INFO L226 Difference]: Without dead ends: 633 [2021-11-03 05:28:29,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:28:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-03 05:28:29,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 626. [2021-11-03 05:28:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 341 states have (on average 1.9472140762463344) internal successors, (664), 625 states have internal predecessors, (664), 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) [2021-11-03 05:28:29,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 664 transitions. [2021-11-03 05:28:29,945 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 664 transitions. Word has length 5 [2021-11-03 05:28:29,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:29,945 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 664 transitions. [2021-11-03 05:28:29,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2021-11-03 05:28:29,946 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 664 transitions. [2021-11-03 05:28:29,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-03 05:28:29,947 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:29,947 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-03 05:28:29,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:30,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:30,160 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:30,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:30,160 INFO L85 PathProgramCache]: Analyzing trace with hash 28698827, now seen corresponding path program 1 times [2021-11-03 05:28:30,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:30,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217346526] [2021-11-03 05:28:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:30,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:30,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:30,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:30,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:28:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:30,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:28:30,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:30,269 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 [2021-11-03 05:28:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:30,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:30,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:30,364 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:30,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217346526] [2021-11-03 05:28:30,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217346526] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:30,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:30,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-03 05:28:30,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613248265] [2021-11-03 05:28:30,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:28:30,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:30,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:28:30,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:28:30,367 INFO L87 Difference]: Start difference. First operand 626 states and 664 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-03 05:28:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:32,903 INFO L93 Difference]: Finished difference Result 699 states and 741 transitions. [2021-11-03 05:28:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:28:32,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 5 [2021-11-03 05:28:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:32,908 INFO L225 Difference]: With dead ends: 699 [2021-11-03 05:28:32,908 INFO L226 Difference]: Without dead ends: 699 [2021-11-03 05:28:32,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:28:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-11-03 05:28:32,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 648. [2021-11-03 05:28:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 373 states have (on average 1.9302949061662198) internal successors, (720), 647 states have internal predecessors, (720), 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) [2021-11-03 05:28:32,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 720 transitions. [2021-11-03 05:28:32,924 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 720 transitions. Word has length 5 [2021-11-03 05:28:32,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:32,925 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 720 transitions. [2021-11-03 05:28:32,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-11-03 05:28:32,925 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 720 transitions. [2021-11-03 05:28:32,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-03 05:28:32,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:32,926 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-03 05:28:32,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-03 05:28:33,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:33,137 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash 890510813, now seen corresponding path program 1 times [2021-11-03 05:28:33,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:33,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924333942] [2021-11-03 05:28:33,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:33,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:33,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:33,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:33,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:28:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:33,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:28:33,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:33,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:33,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:33,272 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:33,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924333942] [2021-11-03 05:28:33,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924333942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:33,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:33,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:28:33,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950894999] [2021-11-03 05:28:33,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:28:33,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:33,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:28:33,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:28:33,274 INFO L87 Difference]: Start difference. First operand 648 states and 720 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-03 05:28:33,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:33,363 INFO L93 Difference]: Finished difference Result 1239 states and 1372 transitions. [2021-11-03 05:28:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:28:33,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 6 [2021-11-03 05:28:33,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:33,370 INFO L225 Difference]: With dead ends: 1239 [2021-11-03 05:28:33,371 INFO L226 Difference]: Without dead ends: 1239 [2021-11-03 05:28:33,371 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:28:33,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-03 05:28:33,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 979. [2021-11-03 05:28:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 979 states, 704 states have (on average 1.9488636363636365) internal successors, (1372), 978 states have internal predecessors, (1372), 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) [2021-11-03 05:28:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1372 transitions. [2021-11-03 05:28:33,400 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1372 transitions. Word has length 6 [2021-11-03 05:28:33,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:33,400 INFO L470 AbstractCegarLoop]: Abstraction has 979 states and 1372 transitions. [2021-11-03 05:28:33,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-11-03 05:28:33,401 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1372 transitions. [2021-11-03 05:28:33,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-03 05:28:33,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:33,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:33,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:33,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:33,613 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:33,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2013913556, now seen corresponding path program 1 times [2021-11-03 05:28:33,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:33,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124060319] [2021-11-03 05:28:33,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:33,614 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:33,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:33,615 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:33,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:28:33,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:33,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:28:33,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:33,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:33,827 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:33,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124060319] [2021-11-03 05:28:33,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124060319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:33,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:33,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:28:33,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80512275] [2021-11-03 05:28:33,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:28:33,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:28:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:28:33,829 INFO L87 Difference]: Start difference. First operand 979 states and 1372 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-03 05:28:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:33,884 INFO L93 Difference]: Finished difference Result 919 states and 1286 transitions. [2021-11-03 05:28:33,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:28:33,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 11 [2021-11-03 05:28:33,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:33,890 INFO L225 Difference]: With dead ends: 919 [2021-11-03 05:28:33,890 INFO L226 Difference]: Without dead ends: 919 [2021-11-03 05:28:33,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:28:33,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2021-11-03 05:28:33,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 919. [2021-11-03 05:28:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 668 states have (on average 1.9251497005988023) internal successors, (1286), 918 states have internal predecessors, (1286), 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) [2021-11-03 05:28:33,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1286 transitions. [2021-11-03 05:28:33,913 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1286 transitions. Word has length 11 [2021-11-03 05:28:33,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:33,913 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1286 transitions. [2021-11-03 05:28:33,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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) [2021-11-03 05:28:33,914 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1286 transitions. [2021-11-03 05:28:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 05:28:33,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:33,914 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:33,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:34,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:34,126 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:34,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:34,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1659327634, now seen corresponding path program 1 times [2021-11-03 05:28:34,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:34,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702203649] [2021-11-03 05:28:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:34,128 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:34,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:34,129 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:34,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:28:34,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:34,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:28:34,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:34,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:34,334 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:34,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702203649] [2021-11-03 05:28:34,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702203649] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:34,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:34,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 05:28:34,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848106178] [2021-11-03 05:28:34,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:28:34,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:34,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:28:34,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:28:34,336 INFO L87 Difference]: Start difference. First operand 919 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-03 05:28:34,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:34,421 INFO L93 Difference]: Finished difference Result 891 states and 1230 transitions. [2021-11-03 05:28:34,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:28:34,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 05:28:34,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:34,431 INFO L225 Difference]: With dead ends: 891 [2021-11-03 05:28:34,433 INFO L226 Difference]: Without dead ends: 891 [2021-11-03 05:28:34,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:28:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-11-03 05:28:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2021-11-03 05:28:34,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 652 states have (on average 1.883435582822086) internal successors, (1228), 888 states have internal predecessors, (1228), 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) [2021-11-03 05:28:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1228 transitions. [2021-11-03 05:28:34,455 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1228 transitions. Word has length 13 [2021-11-03 05:28:34,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:34,455 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1228 transitions. [2021-11-03 05:28:34,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-11-03 05:28:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1228 transitions. [2021-11-03 05:28:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:28:34,457 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:34,457 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:34,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-03 05:28:34,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:34,668 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:34,669 INFO L85 PathProgramCache]: Analyzing trace with hash 913198236, now seen corresponding path program 1 times [2021-11-03 05:28:34,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:34,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923389960] [2021-11-03 05:28:34,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:34,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:34,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:34,671 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:34,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:28:34,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:34,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:28:34,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:34,835 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 [2021-11-03 05:28:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:34,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:35,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:35,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923389960] [2021-11-03 05:28:35,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [923389960] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:35,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:35,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:28:35,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401597027] [2021-11-03 05:28:35,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:28:35,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:28:35,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:28:35,058 INFO L87 Difference]: Start difference. First operand 889 states and 1228 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-03 05:28:36,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:36,226 INFO L93 Difference]: Finished difference Result 959 states and 1305 transitions. [2021-11-03 05:28:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:28:36,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2021-11-03 05:28:36,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:36,237 INFO L225 Difference]: With dead ends: 959 [2021-11-03 05:28:36,238 INFO L226 Difference]: Without dead ends: 959 [2021-11-03 05:28:36,238 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:28:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2021-11-03 05:28:36,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 885. [2021-11-03 05:28:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 652 states have (on average 1.8711656441717792) internal successors, (1220), 884 states have internal predecessors, (1220), 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) [2021-11-03 05:28:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1220 transitions. [2021-11-03 05:28:36,261 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1220 transitions. Word has length 27 [2021-11-03 05:28:36,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:36,262 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1220 transitions. [2021-11-03 05:28:36,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2021-11-03 05:28:36,262 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1220 transitions. [2021-11-03 05:28:36,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 05:28:36,264 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:36,266 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:36,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:36,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:36,478 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:36,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:36,478 INFO L85 PathProgramCache]: Analyzing trace with hash 913198237, now seen corresponding path program 1 times [2021-11-03 05:28:36,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:36,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784833909] [2021-11-03 05:28:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:36,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:36,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:36,484 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:36,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:28:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:36,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:28:36,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:36,641 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 [2021-11-03 05:28:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:36,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:37,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:37,320 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:37,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784833909] [2021-11-03 05:28:37,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784833909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:37,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:37,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:28:37,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518378865] [2021-11-03 05:28:37,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:28:37,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:37,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:28:37,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:28:37,322 INFO L87 Difference]: Start difference. First operand 885 states and 1220 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:40,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:40,314 INFO L93 Difference]: Finished difference Result 1006 states and 1323 transitions. [2021-11-03 05:28:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:28:40,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 05:28:40,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:40,321 INFO L225 Difference]: With dead ends: 1006 [2021-11-03 05:28:40,321 INFO L226 Difference]: Without dead ends: 1006 [2021-11-03 05:28:40,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:28:40,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2021-11-03 05:28:40,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 881. [2021-11-03 05:28:40,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 652 states have (on average 1.8588957055214723) internal successors, (1212), 880 states have internal predecessors, (1212), 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) [2021-11-03 05:28:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1212 transitions. [2021-11-03 05:28:40,342 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1212 transitions. Word has length 27 [2021-11-03 05:28:40,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:40,342 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1212 transitions. [2021-11-03 05:28:40,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:28:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1212 transitions. [2021-11-03 05:28:40,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-03 05:28:40,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:40,344 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:40,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:40,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:40,556 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:40,557 INFO L85 PathProgramCache]: Analyzing trace with hash 944973104, now seen corresponding path program 1 times [2021-11-03 05:28:40,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:40,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305435096] [2021-11-03 05:28:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:40,558 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:40,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:40,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:40,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:28:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:40,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:28:40,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:40,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:41,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:41,042 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:41,042 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305435096] [2021-11-03 05:28:41,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305435096] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:41,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:41,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-03 05:28:41,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456458573] [2021-11-03 05:28:41,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:28:41,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:41,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:28:41,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:28:41,044 INFO L87 Difference]: Start difference. First operand 881 states and 1212 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-03 05:28:41,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:41,094 INFO L93 Difference]: Finished difference Result 869 states and 1192 transitions. [2021-11-03 05:28:41,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:28:41,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2021-11-03 05:28:41,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:41,100 INFO L225 Difference]: With dead ends: 869 [2021-11-03 05:28:41,100 INFO L226 Difference]: Without dead ends: 869 [2021-11-03 05:28:41,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:28:41,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-11-03 05:28:41,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 869. [2021-11-03 05:28:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 640 states have (on average 1.8625) internal successors, (1192), 868 states have internal predecessors, (1192), 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) [2021-11-03 05:28:41,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1192 transitions. [2021-11-03 05:28:41,119 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1192 transitions. Word has length 42 [2021-11-03 05:28:41,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:41,119 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1192 transitions. [2021-11-03 05:28:41,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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) [2021-11-03 05:28:41,120 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1192 transitions. [2021-11-03 05:28:41,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-03 05:28:41,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:41,121 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:41,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:41,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:41,334 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:41,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:41,334 INFO L85 PathProgramCache]: Analyzing trace with hash 29098340, now seen corresponding path program 1 times [2021-11-03 05:28:41,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:41,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235977109] [2021-11-03 05:28:41,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:41,335 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:41,336 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:41,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:28:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:41,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:28:41,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:41,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:41,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:42,313 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:42,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235977109] [2021-11-03 05:28:42,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235977109] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:42,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:42,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 05:28:42,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763312020] [2021-11-03 05:28:42,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:28:42,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:28:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:28:42,315 INFO L87 Difference]: Start difference. First operand 869 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-03 05:28:42,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:42,404 INFO L93 Difference]: Finished difference Result 819 states and 1087 transitions. [2021-11-03 05:28:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:28:42,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-11-03 05:28:42,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:42,409 INFO L225 Difference]: With dead ends: 819 [2021-11-03 05:28:42,409 INFO L226 Difference]: Without dead ends: 819 [2021-11-03 05:28:42,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:28:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2021-11-03 05:28:42,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 819. [2021-11-03 05:28:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 590 states have (on average 1.8423728813559321) internal successors, (1087), 818 states have internal predecessors, (1087), 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) [2021-11-03 05:28:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1087 transitions. [2021-11-03 05:28:42,452 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1087 transitions. Word has length 50 [2021-11-03 05:28:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:42,453 INFO L470 AbstractCegarLoop]: Abstraction has 819 states and 1087 transitions. [2021-11-03 05:28:42,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2021-11-03 05:28:42,453 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1087 transitions. [2021-11-03 05:28:42,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-03 05:28:42,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:42,456 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:42,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-03 05:28:42,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:42,669 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash -839399161, now seen corresponding path program 1 times [2021-11-03 05:28:42,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:42,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946170394] [2021-11-03 05:28:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:42,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:42,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:42,671 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:42,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-03 05:28:43,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:43,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 05:28:43,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:43,039 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 [2021-11-03 05:28:43,044 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 [2021-11-03 05:28:43,729 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-03 05:28:43,729 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 27 treesize of output 29 [2021-11-03 05:28:43,736 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-03 05:28:43,737 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 26 treesize of output 22 [2021-11-03 05:28:43,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:43,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:48,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:48,644 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:48,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946170394] [2021-11-03 05:28:48,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946170394] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:48,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:48,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-03 05:28:48,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558720949] [2021-11-03 05:28:48,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:28:48,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:48,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:28:48,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-03 05:28:48,646 INFO L87 Difference]: Start difference. First operand 819 states and 1087 transitions. Second operand has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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) [2021-11-03 05:28:58,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:28:58,047 INFO L93 Difference]: Finished difference Result 794 states and 1025 transitions. [2021-11-03 05:28:58,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:28:58,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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 53 [2021-11-03 05:28:58,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:28:58,052 INFO L225 Difference]: With dead ends: 794 [2021-11-03 05:28:58,052 INFO L226 Difference]: Without dead ends: 794 [2021-11-03 05:28:58,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-03 05:28:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-03 05:28:58,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 749. [2021-11-03 05:28:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 558 states have (on average 1.6935483870967742) internal successors, (945), 748 states have internal predecessors, (945), 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) [2021-11-03 05:28:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 945 transitions. [2021-11-03 05:28:58,070 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 945 transitions. Word has length 53 [2021-11-03 05:28:58,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:28:58,071 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 945 transitions. [2021-11-03 05:28:58,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.8) internal successors, (104), 6 states have internal predecessors, (104), 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) [2021-11-03 05:28:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 945 transitions. [2021-11-03 05:28:58,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-03 05:28:58,072 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:28:58,072 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:28:58,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-03 05:28:58,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:28:58,286 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:28:58,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:28:58,286 INFO L85 PathProgramCache]: Analyzing trace with hash -416260760, now seen corresponding path program 1 times [2021-11-03 05:28:58,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:28:58,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635008006] [2021-11-03 05:28:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:28:58,287 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:28:58,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:28:58,288 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:28:58,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-03 05:28:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:28:58,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:28:58,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:28:58,756 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 [2021-11-03 05:28:58,772 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 21 treesize of output 17 [2021-11-03 05:28:58,820 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 23 treesize of output 11 [2021-11-03 05:28:58,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:58,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:28:58,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:28:58,991 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:28:58,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635008006] [2021-11-03 05:28:58,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635008006] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:28:58,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:28:58,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-03 05:28:58,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174933287] [2021-11-03 05:28:58,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:28:58,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:28:58,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:28:58,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:28:58,993 INFO L87 Difference]: Start difference. First operand 749 states and 945 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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) [2021-11-03 05:29:01,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:01,714 INFO L93 Difference]: Finished difference Result 1018 states and 1234 transitions. [2021-11-03 05:29:01,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:29:01,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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 59 [2021-11-03 05:29:01,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:01,721 INFO L225 Difference]: With dead ends: 1018 [2021-11-03 05:29:01,721 INFO L226 Difference]: Without dead ends: 1018 [2021-11-03 05:29:01,721 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:29:01,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-03 05:29:01,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 748. [2021-11-03 05:29:01,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 558 states have (on average 1.689964157706093) internal successors, (943), 747 states have internal predecessors, (943), 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) [2021-11-03 05:29:01,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 943 transitions. [2021-11-03 05:29:01,740 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 943 transitions. Word has length 59 [2021-11-03 05:29:01,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:01,740 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 943 transitions. [2021-11-03 05:29:01,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 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) [2021-11-03 05:29:01,741 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 943 transitions. [2021-11-03 05:29:01,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-03 05:29:01,742 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:01,742 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:01,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:01,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:01,954 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:29:01,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:01,955 INFO L85 PathProgramCache]: Analyzing trace with hash -19181353, now seen corresponding path program 1 times [2021-11-03 05:29:01,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:01,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244201646] [2021-11-03 05:29:01,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:01,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:01,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:01,957 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:01,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-03 05:29:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:02,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 05:29:02,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:02,546 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 [2021-11-03 05:29:02,574 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 [2021-11-03 05:29:02,582 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 [2021-11-03 05:29:02,648 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 [2021-11-03 05:29:02,651 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 [2021-11-03 05:29:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:02,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:03,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:03,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244201646] [2021-11-03 05:29:03,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244201646] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:03,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:03,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 05:29:03,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232495518] [2021-11-03 05:29:03,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:29:03,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:03,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:29:03,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:29:03,134 INFO L87 Difference]: Start difference. First operand 748 states and 943 transitions. Second operand has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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) [2021-11-03 05:29:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:11,301 INFO L93 Difference]: Finished difference Result 889 states and 1101 transitions. [2021-11-03 05:29:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:29:11,302 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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 [2021-11-03 05:29:11,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:11,307 INFO L225 Difference]: With dead ends: 889 [2021-11-03 05:29:11,307 INFO L226 Difference]: Without dead ends: 889 [2021-11-03 05:29:11,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:29:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2021-11-03 05:29:11,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 747. [2021-11-03 05:29:11,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 747 states, 558 states have (on average 1.6863799283154122) internal successors, (941), 746 states have internal predecessors, (941), 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) [2021-11-03 05:29:11,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 941 transitions. [2021-11-03 05:29:11,325 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 941 transitions. Word has length 60 [2021-11-03 05:29:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:11,326 INFO L470 AbstractCegarLoop]: Abstraction has 747 states and 941 transitions. [2021-11-03 05:29:11,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.666666666666667) internal successors, (69), 10 states have internal predecessors, (69), 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) [2021-11-03 05:29:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 941 transitions. [2021-11-03 05:29:11,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 05:29:11,327 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:11,327 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:29:11,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:11,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:11,540 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:29:11,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:11,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1927168386, now seen corresponding path program 1 times [2021-11-03 05:29:11,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:11,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375034433] [2021-11-03 05:29:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:11,541 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:11,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:11,542 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:11,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-03 05:29:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:11,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 05:29:11,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:12,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:12,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:12,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375034433] [2021-11-03 05:29:12,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375034433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:29:12,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:29:12,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 05:29:12,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049443286] [2021-11-03 05:29:12,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 05:29:12,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:12,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 05:29:12,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 05:29:12,234 INFO L87 Difference]: Start difference. First operand 747 states and 941 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-03 05:29:12,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:12,367 INFO L93 Difference]: Finished difference Result 1005 states and 1214 transitions. [2021-11-03 05:29:12,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:29:12,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 64 [2021-11-03 05:29:12,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:12,373 INFO L225 Difference]: With dead ends: 1005 [2021-11-03 05:29:12,373 INFO L226 Difference]: Without dead ends: 1005 [2021-11-03 05:29:12,374 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:29:12,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2021-11-03 05:29:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 753. [2021-11-03 05:29:12,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 564 states have (on average 1.679078014184397) internal successors, (947), 752 states have internal predecessors, (947), 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) [2021-11-03 05:29:12,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 947 transitions. [2021-11-03 05:29:12,392 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 947 transitions. Word has length 64 [2021-11-03 05:29:12,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:12,392 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 947 transitions. [2021-11-03 05:29:12,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-03 05:29:12,392 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 947 transitions. [2021-11-03 05:29:12,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-03 05:29:12,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:12,393 INFO L513 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] [2021-11-03 05:29:12,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-03 05:29:12,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:29:12,607 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:29:12,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:12,607 INFO L85 PathProgramCache]: Analyzing trace with hash -938951394, now seen corresponding path program 1 times [2021-11-03 05:29:12,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:12,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823572778] [2021-11-03 05:29:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:12,608 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:12,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:12,609 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:12,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-03 05:29:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:13,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:29:13,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:13,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:13,444 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:13,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823572778] [2021-11-03 05:29:13,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823572778] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:13,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [146624593] [2021-11-03 05:29:13,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:13,445 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:29:13,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:29:13,447 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:29:13,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-03 05:29:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:14,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:29:14,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:14,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:14,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [146624593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:14,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378401292] [2021-11-03 05:29:14,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:29:14,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:29:14,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:29:14,408 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:29:14,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-03 05:29:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:29:14,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 05:29:14,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:15,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:15,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378401292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:15,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:29:15,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 10 [2021-11-03 05:29:15,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359866542] [2021-11-03 05:29:15,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 05:29:15,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:29:15,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 05:29:15,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:29:15,279 INFO L87 Difference]: Start difference. First operand 753 states and 947 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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) [2021-11-03 05:29:15,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:29:15,696 INFO L93 Difference]: Finished difference Result 1017 states and 1226 transitions. [2021-11-03 05:29:15,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 05:29:15,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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 66 [2021-11-03 05:29:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:29:15,701 INFO L225 Difference]: With dead ends: 1017 [2021-11-03 05:29:15,701 INFO L226 Difference]: Without dead ends: 1017 [2021-11-03 05:29:15,702 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 382 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=144, Unknown=0, NotChecked=0, Total=240 [2021-11-03 05:29:15,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-11-03 05:29:15,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 765. [2021-11-03 05:29:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 576 states have (on average 1.6649305555555556) internal successors, (959), 764 states have internal predecessors, (959), 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) [2021-11-03 05:29:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 959 transitions. [2021-11-03 05:29:15,721 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 959 transitions. Word has length 66 [2021-11-03 05:29:15,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:29:15,722 INFO L470 AbstractCegarLoop]: Abstraction has 765 states and 959 transitions. [2021-11-03 05:29:15,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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) [2021-11-03 05:29:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 959 transitions. [2021-11-03 05:29:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-03 05:29:15,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:29:15,723 INFO L513 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] [2021-11-03 05:29:15,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-03 05:29:15,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:16,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-03 05:29:16,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 05:29:16,342 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:29:16,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:29:16,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1093747294, now seen corresponding path program 2 times [2021-11-03 05:29:16,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:29:16,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252905363] [2021-11-03 05:29:16,343 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:29:16,343 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:29:16,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:29:16,344 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:29:16,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-03 05:29:17,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:29:17,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:29:17,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:29:17,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:17,295 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:17,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:17,744 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:29:17,744 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252905363] [2021-11-03 05:29:17,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252905363] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:17,745 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2042970434] [2021-11-03 05:29:17,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:29:17,745 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:29:17,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:29:17,746 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:29:17,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-03 05:29:19,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:29:19,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:29:19,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 05:29:19,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:19,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:29:19,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2042970434] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:29:19,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285300469] [2021-11-03 05:29:19,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:29:19,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:29:19,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:29:19,402 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:29:19,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-03 05:29:32,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:29:32,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:29:32,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 05:29:32,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:29:32,691 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:29:32,691 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 19 treesize of output 19 [2021-11-03 05:29:32,736 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 18 treesize of output 14 [2021-11-03 05:29:33,095 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 05:29:33,096 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 1 case distinctions, treesize of input 33 treesize of output 26 [2021-11-03 05:29:33,281 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:29:33,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 05:29:34,617 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:29:34,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 05:29:34,771 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:29:34,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 05:29:37,094 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:29:37,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 38 [2021-11-03 05:29:39,609 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:29:39,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 47 [2021-11-03 05:29:39,941 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 05:29:39,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 27 [2021-11-03 05:29:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-03 05:29:39,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:29:42,130 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))))))) (_ bv1 1)))) is different from false [2021-11-03 05:30:27,853 INFO L354 Elim1Store]: treesize reduction 5, result has 85.3 percent of original size [2021-11-03 05:30:27,854 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 51 treesize of output 50 [2021-11-03 05:30:33,412 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 5 refuted. 6 times theorem prover too weak. 3 trivial. 6 not checked. [2021-11-03 05:30:33,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285300469] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:30:33,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:30:33,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10, 10, 12] total 37 [2021-11-03 05:30:33,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520522047] [2021-11-03 05:30:33,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-03 05:30:33,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:30:33,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-03 05:30:33,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1076, Unknown=18, NotChecked=68, Total=1332 [2021-11-03 05:30:33,415 INFO L87 Difference]: Start difference. First operand 765 states and 959 transitions. Second operand has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 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) [2021-11-03 05:30:44,120 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-11-03 05:30:50,444 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-11-03 05:31:01,059 WARN L207 SmtUtils]: Spent 6.13 s on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-11-03 05:31:11,740 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2021-11-03 05:31:20,269 WARN L207 SmtUtils]: Spent 8.30 s on a formula simplification. DAG size of input: 72 DAG size of output: 52 [2021-11-03 05:31:26,619 WARN L207 SmtUtils]: Spent 6.22 s on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-11-03 05:31:32,962 WARN L207 SmtUtils]: Spent 6.22 s on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2021-11-03 05:31:41,319 WARN L207 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2021-11-03 05:31:53,898 WARN L207 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2021-11-03 05:32:00,197 WARN L207 SmtUtils]: Spent 6.14 s on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2021-11-03 05:32:06,432 WARN L207 SmtUtils]: Spent 6.12 s on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2021-11-03 05:32:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:32:49,290 INFO L93 Difference]: Finished difference Result 1047 states and 1256 transitions. [2021-11-03 05:32:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-03 05:32:49,291 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 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 70 [2021-11-03 05:32:49,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:32:49,295 INFO L225 Difference]: With dead ends: 1047 [2021-11-03 05:32:49,295 INFO L226 Difference]: Without dead ends: 1047 [2021-11-03 05:32:49,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 373 SyntacticMatches, 8 SemanticMatches, 75 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 160.6s TimeCoverageRelationStatistics Valid=1150, Invalid=4532, Unknown=22, NotChecked=148, Total=5852 [2021-11-03 05:32:49,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2021-11-03 05:32:49,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 788. [2021-11-03 05:32:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 600 states have (on average 1.635) internal successors, (981), 787 states have internal predecessors, (981), 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) [2021-11-03 05:32:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 981 transitions. [2021-11-03 05:32:49,316 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 981 transitions. Word has length 70 [2021-11-03 05:32:49,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:32:49,316 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 981 transitions. [2021-11-03 05:32:49,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 5.621621621621622) internal successors, (208), 37 states have internal predecessors, (208), 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) [2021-11-03 05:32:49,317 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 981 transitions. [2021-11-03 05:32:49,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 05:32:49,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:32:49,318 INFO L513 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] [2021-11-03 05:32:49,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-11-03 05:32:49,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-03 05:32:49,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-03 05:32:49,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:32:49,923 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:32:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:32:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1408996129, now seen corresponding path program 1 times [2021-11-03 05:32:49,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:32:49,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796079214] [2021-11-03 05:32:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:49,924 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:32:49,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:32:49,925 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:32:49,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-03 05:32:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:50,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:32:50,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:32:51,505 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:51,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:32:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:53,017 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:32:53,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796079214] [2021-11-03 05:32:53,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796079214] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:32:53,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1053977779] [2021-11-03 05:32:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:53,017 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:32:53,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:32:53,018 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:32:53,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2021-11-03 05:32:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:53,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:32:53,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:32:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:54,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:32:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:54,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1053977779] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:32:54,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295750969] [2021-11-03 05:32:54,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:32:54,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:32:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:32:54,466 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:32:54,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-03 05:32:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:32:55,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:32:55,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:32:55,594 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:55,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:32:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:32:55,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295750969] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:32:55,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 05:32:55,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18, 18, 18, 18] total 34 [2021-11-03 05:32:55,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533544192] [2021-11-03 05:32:55,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-03 05:32:55,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:32:55,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-03 05:32:55,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-03 05:32:55,817 INFO L87 Difference]: Start difference. First operand 788 states and 981 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2021-11-03 05:33:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:33:10,079 INFO L93 Difference]: Finished difference Result 1088 states and 1296 transitions. [2021-11-03 05:33:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-03 05:33:10,080 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 78 [2021-11-03 05:33:10,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:33:10,085 INFO L225 Difference]: With dead ends: 1088 [2021-11-03 05:33:10,086 INFO L226 Difference]: Without dead ends: 1088 [2021-11-03 05:33:10,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1446, Invalid=2586, Unknown=0, NotChecked=0, Total=4032 [2021-11-03 05:33:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2021-11-03 05:33:10,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 836. [2021-11-03 05:33:10,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 648 states have (on average 1.587962962962963) internal successors, (1029), 835 states have internal predecessors, (1029), 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) [2021-11-03 05:33:10,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1029 transitions. [2021-11-03 05:33:10,104 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1029 transitions. Word has length 78 [2021-11-03 05:33:10,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:33:10,105 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1029 transitions. [2021-11-03 05:33:10,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2021-11-03 05:33:10,105 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1029 transitions. [2021-11-03 05:33:10,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 05:33:10,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:33:10,106 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:33:10,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:10,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:10,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-03 05:33:10,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:33:10,734 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 335 more)] === [2021-11-03 05:33:10,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:33:10,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2005712417, now seen corresponding path program 2 times [2021-11-03 05:33:10,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:33:10,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342514051] [2021-11-03 05:33:10,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:33:10,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:33:10,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:33:10,736 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:33:10,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-03 05:33:11,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:33:11,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:33:11,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 05:33:11,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:13,881 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:13,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:18,300 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:33:18,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342514051] [2021-11-03 05:33:18,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342514051] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:33:18,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1322771855] [2021-11-03 05:33:18,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:33:18,300 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 05:33:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 05:33:18,301 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 05:33:18,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2021-11-03 05:33:19,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:33:19,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:33:19,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-03 05:33:19,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:20,420 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:20,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:33:20,702 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:33:20,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1322771855] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 05:33:20,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967437829] [2021-11-03 05:33:20,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 05:33:20,702 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 05:33:20,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:33:20,703 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 05:33:20,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97d740fb-3930-475f-bf2c-986cfae57fc7/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-03 05:33:37,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 05:33:37,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 05:33:37,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-03 05:33:37,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:33:37,659 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-03 05:33:37,660 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 18 treesize of output 18 [2021-11-03 05:33:37,676 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 [2021-11-03 05:33:37,846 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 [2021-11-03 05:33:37,859 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 [2021-11-03 05:33:38,653 INFO L354 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2021-11-03 05:33:38,653 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 1 case distinctions, treesize of input 68 treesize of output 67 [2021-11-03 05:33:38,693 INFO L354 Elim1Store]: treesize reduction 35, result has 20.5 percent of original size [2021-11-03 05:33:38,694 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 1 case distinctions, treesize of input 64 treesize of output 51 [2021-11-03 05:33:39,136 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:33:39,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:33:40,578 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:33:40,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:33:41,013 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:33:41,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:33:41,089 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:33:41,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:33:43,478 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:33:43,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:33:46,132 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:33:46,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:33:46,534 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:33:46,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:33:48,233 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:33:48,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:33:50,558 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:33:50,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:33:51,569 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:33:51,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:33:54,367 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:33:54,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:33:55,589 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:33:55,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:33:58,230 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:33:58,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:00,139 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:00,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:00,580 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:00,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:07,738 WARN L207 SmtUtils]: Spent 7.15 s on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2021-11-03 05:34:07,739 INFO L354 Elim1Store]: treesize reduction 72, result has 24.2 percent of original size [2021-11-03 05:34:07,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 78 [2021-11-03 05:34:08,129 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:08,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:09,662 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:09,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:10,988 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:10,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:12,213 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:12,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:13,736 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:13,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:15,004 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:15,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:16,789 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:16,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:17,961 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:17,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:20,340 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:20,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:20,399 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:20,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:22,242 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:22,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:22,305 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:22,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:26,133 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:26,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:27,298 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:27,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:27,736 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:27,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:27,797 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:27,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:30,074 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:30,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:32,124 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:32,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:34,380 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:34,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:34,440 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:34,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:39,102 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:39,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:40,655 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:40,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:41,086 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:41,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:42,875 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:42,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:44,525 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:44,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:44,594 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:44,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:46,977 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:46,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:47,035 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:47,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:48,367 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:48,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:48,429 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:48,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:50,216 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:50,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:52,845 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:52,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:54,596 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:54,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:56,325 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:56,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:34:59,781 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:34:59,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:34:59,849 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:34:59,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:35:01,796 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:35:01,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:35:03,010 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:35:03,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:35:07,065 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-03 05:35:07,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 90 [2021-11-03 05:35:11,110 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:35:11,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 74 [2021-11-03 05:35:11,528 INFO L354 Elim1Store]: treesize reduction 76, result has 20.0 percent of original size [2021-11-03 05:35:11,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 115 treesize of output 78 [2021-11-03 05:35:11,582 INFO L354 Elim1Store]: treesize reduction 104, result has 19.4 percent of original size [2021-11-03 05:35:11,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 105 treesize of output 101 [2021-11-03 05:35:12,203 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 05:35:12,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 113 treesize of output 62 [2021-11-03 05:35:12,211 INFO L354 Elim1Store]: treesize reduction 44, result has 2.2 percent of original size [2021-11-03 05:35:12,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2021-11-03 05:35:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 29 proven. 30 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-03 05:35:12,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:15,066 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32))) (let ((.cse0 (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|)) (.cse1 (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) c_ULTIMATE.start_main_~user~0.base) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) .cse0 (_ bv0 32))) c_ULTIMATE.start_main_~user~0.base) .cse1))))) (forall ((|ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.base|) (bvadd |ULTIMATE.start_#Ultimate.C_memset_#t~loopctr145| |c_ULTIMATE.start_#Ultimate.C_memset_#ptr.offset|) ((_ zero_extend 24) ((_ extract 7 0) |c_ULTIMATE.start_#Ultimate.C_memset_#value|)))) c_ULTIMATE.start_main_~user~0.base) (bvadd (_ bv8 32) c_ULTIMATE.start_main_~user~0.offset)))) (bvule (bvadd (_ bv16 32) .cse2) (bvadd .cse2 (_ bv20 32)))))) is different from false [2021-11-03 05:35:53,338 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 46