./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:35:18,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:35:18,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:35:18,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:35:18,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:35:18,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:35:18,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:35:18,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:35:18,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:35:18,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:35:18,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:35:18,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:35:18,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:35:18,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:35:18,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:35:18,475 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:35:18,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:35:18,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:35:18,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:35:18,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:35:18,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:35:18,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:35:18,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:35:18,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:35:18,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:35:18,503 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:35:18,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:35:18,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:35:18,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:35:18,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:35:18,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:35:18,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:35:18,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:35:18,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:35:18,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:35:18,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:35:18,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:35:18,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:35:18,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:35:18,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:35:18,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:35:18,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:35:18,559 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:35:18,559 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:35:18,561 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:35:18,561 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:35:18,561 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:35:18,562 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:35:18,562 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:35:18,562 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:35:18,562 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:35:18,562 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:35:18,563 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:35:18,563 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:35:18,564 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:35:18,564 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:35:18,564 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:35:18,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:35:18,565 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:35:18,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:35:18,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:35:18,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:35:18,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:35:18,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:35:18,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:35:18,566 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:35:18,566 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:35:18,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:35:18,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:35:18,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:35:18,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:35:18,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:35:18,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:35:18,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:35:18,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:35:18,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:35:18,570 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:35:18,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:35:18,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:35:18,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:35:18,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:35:18,571 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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-11-03 05:35:18,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:35:18,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:35:18,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:35:18,899 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:35:18,900 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:35:18,901 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-03 05:35:18,979 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data/8d7d08364/18fc404278134952bb76915c6427d8e2/FLAG623f42717 [2021-11-03 05:35:19,667 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:35:19,667 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-03 05:35:19,705 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data/8d7d08364/18fc404278134952bb76915c6427d8e2/FLAG623f42717 [2021-11-03 05:35:19,872 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data/8d7d08364/18fc404278134952bb76915c6427d8e2 [2021-11-03 05:35:19,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:35:19,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:35:19,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:35:19,879 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:35:19,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:35:19,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:35:19" (1/1) ... [2021-11-03 05:35:19,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aac84c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:19, skipping insertion in model container [2021-11-03 05:35:19,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:35:19" (1/1) ... [2021-11-03 05:35:19,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:35:19,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:35:20,333 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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-03 05:35:20,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:35:20,356 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 05:35:20,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@594c3096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:20, skipping insertion in model container [2021-11-03 05:35:20,357 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:35:20,357 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 05:35:20,359 INFO L168 Benchmark]: Toolchain (without parser) took 483.02 ms. Allocated memory is still 102.8 MB. Free memory was 66.0 MB in the beginning and 68.5 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:35:20,360 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 77.6 MB. Free memory was 48.1 MB in the beginning and 48.1 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 05:35:20,360 INFO L168 Benchmark]: CACSL2BoogieTranslator took 478.77 ms. Allocated memory is still 102.8 MB. Free memory was 65.8 MB in the beginning and 68.5 MB in the end (delta: -2.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-03 05:35:20,362 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 77.6 MB. Free memory was 48.1 MB in the beginning and 48.1 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 478.77 ms. Allocated memory is still 102.8 MB. Free memory was 65.8 MB in the beginning and 68.5 MB in the end (delta: -2.7 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: 1050]: 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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:35:22,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:35:22,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:35:22,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:35:22,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:35:22,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:35:22,790 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:35:22,794 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:35:22,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:35:22,808 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:35:22,810 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:35:22,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:35:22,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:35:22,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:35:22,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:35:22,822 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:35:22,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:35:22,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:35:22,836 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:35:22,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:35:22,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:35:22,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:35:22,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:35:22,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:35:22,847 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:35:22,848 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:35:22,848 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:35:22,849 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:35:22,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:35:22,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:35:22,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:35:22,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:35:22,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:35:22,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:35:22,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:35:22,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:35:22,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:35:22,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:35:22,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:35:22,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:35:22,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:35:22,858 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 05:35:22,887 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:35:22,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:35:22,888 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:35:22,888 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:35:22,889 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:35:22,889 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:35:22,889 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:35:22,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:35:22,889 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:35:22,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:35:22,890 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:35:22,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:35:22,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:35:22,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:35:22,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:35:22,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:35:22,892 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:35:22,892 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 05:35:22,892 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 05:35:22,892 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:35:22,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:35:22,892 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:35:22,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:35:22,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:35:22,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 05:35:22,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:35:22,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:35:22,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:35:22,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:35:22,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:35:22,894 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 05:35:22,894 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 05:35:22,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:35:22,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:35:22,895 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:35:22,895 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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64affc32c9ee6b1616cdbc82208fa978b35ea8d8fb3017d6636bda9ef421e017 [2021-11-03 05:35:23,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:35:23,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:35:23,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:35:23,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:35:23,305 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:35:23,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-03 05:35:23,386 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data/41862a609/d4f1c8e43913484e87ee551b0aaa10bc/FLAGb3aa7ead2 [2021-11-03 05:35:24,095 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:35:24,103 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c [2021-11-03 05:35:24,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data/41862a609/d4f1c8e43913484e87ee551b0aaa10bc/FLAGb3aa7ead2 [2021-11-03 05:35:24,312 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/data/41862a609/d4f1c8e43913484e87ee551b0aaa10bc [2021-11-03 05:35:24,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:35:24,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:35:24,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:35:24,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:35:24,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:35:24,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:35:24" (1/1) ... [2021-11-03 05:35:24,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d685ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:24, skipping insertion in model container [2021-11-03 05:35:24,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:35:24" (1/1) ... [2021-11-03 05:35:24,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:35:24,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:35:24,981 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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-03 05:35:24,998 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:35:25,037 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 05:35:25,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:35:25,138 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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-03 05:35:25,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:35:25,148 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:35:25,250 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_7f2b49de-7d6f-4680-9f53-17439c4d68ef/sv-benchmarks/c/openssl/s3_srvr.blast.12.i.cil-2.c[75436,75449] [2021-11-03 05:35:25,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:35:25,270 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:35:25,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25 WrapperNode [2021-11-03 05:35:25,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:35:25,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:35:25,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:35:25,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:35:25,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,387 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:35:25,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:35:25,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:35:25,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:35:25,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:35:25,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:35:25,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:35:25,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:35:25,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (1/1) ... [2021-11-03 05:35:25,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:35:25,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:35:25,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:35:25,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:35:25,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 05:35:25,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 05:35:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:35:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 05:35:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 05:35:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 05:35:25,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:35:25,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:35:25,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 05:35:25,862 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-03 05:35:35,681 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2021-11-03 05:35:35,682 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2021-11-03 05:35:35,690 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:35:35,690 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-03 05:35:35,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:35:35 BoogieIcfgContainer [2021-11-03 05:35:35,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:35:35,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:35:35,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:35:35,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:35:35,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:35:24" (1/3) ... [2021-11-03 05:35:35,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590c711f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:35:35, skipping insertion in model container [2021-11-03 05:35:35,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:35:25" (2/3) ... [2021-11-03 05:35:35,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@590c711f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:35:35, skipping insertion in model container [2021-11-03 05:35:35,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:35:35" (3/3) ... [2021-11-03 05:35:35,705 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.12.i.cil-2.c [2021-11-03 05:35:35,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:35:35,721 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 05:35:35,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:35:35,785 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 05:35:35,785 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 05:35:35,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 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 05:35:35,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 05:35:35,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:35,827 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] [2021-11-03 05:35:35,827 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:35:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:35,833 INFO L85 PathProgramCache]: Analyzing trace with hash 918515972, now seen corresponding path program 1 times [2021-11-03 05:35:35,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:35,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917286503] [2021-11-03 05:35:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:35,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:35,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:35,853 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:35,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 05:35:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:36,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:35:36,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:36,455 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 05:35:36,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:36,724 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 05:35:36,725 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:36,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917286503] [2021-11-03 05:35:36,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917286503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:36,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:36,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:35:36,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691825442] [2021-11-03 05:35:36,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:35:36,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:36,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:35:36,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:35:36,753 INFO L87 Difference]: Start difference. First operand has 153 states, 151 states have (on average 1.7218543046357615) internal successors, (260), 152 states have internal predecessors, (260), 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 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 05:35:37,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:37,084 INFO L93 Difference]: Finished difference Result 574 states and 984 transitions. [2021-11-03 05:35:37,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:35:37,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 44 [2021-11-03 05:35:37,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:37,118 INFO L225 Difference]: With dead ends: 574 [2021-11-03 05:35:37,118 INFO L226 Difference]: Without dead ends: 392 [2021-11-03 05:35:37,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 84 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 05:35:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-11-03 05:35:37,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-11-03 05:35:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.5319693094629157) internal successors, (599), 391 states have internal predecessors, (599), 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 05:35:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 599 transitions. [2021-11-03 05:35:37,227 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 599 transitions. Word has length 44 [2021-11-03 05:35:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:37,228 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 599 transitions. [2021-11-03 05:35:37,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 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 05:35:37,228 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 599 transitions. [2021-11-03 05:35:37,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-03 05:35:37,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:37,236 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:35:37,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-03 05:35:37,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:37,452 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:35:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:37,453 INFO L85 PathProgramCache]: Analyzing trace with hash 85239560, now seen corresponding path program 1 times [2021-11-03 05:35:37,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:37,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1289412046] [2021-11-03 05:35:37,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:37,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:37,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:37,466 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:37,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 05:35:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:37,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:35:37,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:35:38,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:38,584 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:35:38,585 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:38,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1289412046] [2021-11-03 05:35:38,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1289412046] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:38,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:38,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:35:38,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119402044] [2021-11-03 05:35:38,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:35:38,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:38,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:35:38,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:35:38,589 INFO L87 Difference]: Start difference. First operand 392 states and 599 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 05:35:39,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:39,261 INFO L93 Difference]: Finished difference Result 897 states and 1389 transitions. [2021-11-03 05:35:39,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:35:39,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 104 [2021-11-03 05:35:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:39,268 INFO L225 Difference]: With dead ends: 897 [2021-11-03 05:35:39,268 INFO L226 Difference]: Without dead ends: 642 [2021-11-03 05:35:39,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 204 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 05:35:39,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2021-11-03 05:35:39,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2021-11-03 05:35:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.5241809672386895) internal successors, (977), 641 states have internal predecessors, (977), 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 05:35:39,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 977 transitions. [2021-11-03 05:35:39,330 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 977 transitions. Word has length 104 [2021-11-03 05:35:39,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:39,331 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 977 transitions. [2021-11-03 05:35:39,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 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 05:35:39,332 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 977 transitions. [2021-11-03 05:35:39,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-03 05:35:39,339 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:39,339 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:35:39,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:39,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:39,559 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:35:39,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:39,559 INFO L85 PathProgramCache]: Analyzing trace with hash -19862405, now seen corresponding path program 1 times [2021-11-03 05:35:39,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:39,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [25460266] [2021-11-03 05:35:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:39,562 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:39,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:39,563 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:39,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 05:35:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:39,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:35:39,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 05:35:40,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:41,102 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-11-03 05:35:41,102 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:41,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [25460266] [2021-11-03 05:35:41,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [25460266] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:41,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:41,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:35:41,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414665566] [2021-11-03 05:35:41,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:35:41,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:41,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:35:41,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:35:41,105 INFO L87 Difference]: Start difference. First operand 642 states and 977 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 05:35:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:41,799 INFO L93 Difference]: Finished difference Result 1400 states and 2148 transitions. [2021-11-03 05:35:41,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:35:41,800 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2021-11-03 05:35:41,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:41,808 INFO L225 Difference]: With dead ends: 1400 [2021-11-03 05:35:41,808 INFO L226 Difference]: Without dead ends: 895 [2021-11-03 05:35:41,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 330 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 05:35:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-03 05:35:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2021-11-03 05:35:41,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 894 states have (on average 1.5190156599552573) internal successors, (1358), 894 states have internal predecessors, (1358), 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 05:35:41,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1358 transitions. [2021-11-03 05:35:41,855 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1358 transitions. Word has length 167 [2021-11-03 05:35:41,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:41,856 INFO L470 AbstractCegarLoop]: Abstraction has 895 states and 1358 transitions. [2021-11-03 05:35:41,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 05:35:41,857 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1358 transitions. [2021-11-03 05:35:41,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-03 05:35:41,864 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:41,865 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:35:41,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:42,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:42,080 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:35:42,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:42,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1844926231, now seen corresponding path program 1 times [2021-11-03 05:35:42,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:42,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091520430] [2021-11-03 05:35:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:42,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:42,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:42,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:42,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 05:35:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:42,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:35:42,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-03 05:35:43,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 292 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-03 05:35:43,880 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:43,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091520430] [2021-11-03 05:35:43,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091520430] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:43,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:43,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:35:43,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654442892] [2021-11-03 05:35:43,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:35:43,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:43,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:35:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:35:43,883 INFO L87 Difference]: Start difference. First operand 895 states and 1358 transitions. Second operand has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 05:35:44,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:44,461 INFO L93 Difference]: Finished difference Result 1904 states and 2905 transitions. [2021-11-03 05:35:44,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:35:44,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 230 [2021-11-03 05:35:44,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:44,469 INFO L225 Difference]: With dead ends: 1904 [2021-11-03 05:35:44,470 INFO L226 Difference]: Without dead ends: 1146 [2021-11-03 05:35:44,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 456 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 05:35:44,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2021-11-03 05:35:44,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1146. [2021-11-03 05:35:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.514410480349345) internal successors, (1734), 1145 states have internal predecessors, (1734), 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 05:35:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1734 transitions. [2021-11-03 05:35:44,518 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1734 transitions. Word has length 230 [2021-11-03 05:35:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:44,519 INFO L470 AbstractCegarLoop]: Abstraction has 1146 states and 1734 transitions. [2021-11-03 05:35:44,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.75) internal successors, (175), 4 states have internal predecessors, (175), 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 05:35:44,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1734 transitions. [2021-11-03 05:35:44,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-03 05:35:44,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:44,526 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:35:44,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:44,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:44,745 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:35:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:44,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1007722868, now seen corresponding path program 1 times [2021-11-03 05:35:44,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:44,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407053817] [2021-11-03 05:35:44,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:44,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:44,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:44,749 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:44,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 05:35:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:45,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:35:45,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:46,374 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-03 05:35:46,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 468 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2021-11-03 05:35:47,220 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:47,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407053817] [2021-11-03 05:35:47,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407053817] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:47,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:47,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:35:47,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014893746] [2021-11-03 05:35:47,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:35:47,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:47,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:35:47,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:35:47,223 INFO L87 Difference]: Start difference. First operand 1146 states and 1734 transitions. Second operand has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 05:35:47,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:47,767 INFO L93 Difference]: Finished difference Result 2409 states and 3659 transitions. [2021-11-03 05:35:47,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:35:47,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 294 [2021-11-03 05:35:47,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:47,778 INFO L225 Difference]: With dead ends: 2409 [2021-11-03 05:35:47,778 INFO L226 Difference]: Without dead ends: 1400 [2021-11-03 05:35:47,781 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 584 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 05:35:47,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-03 05:35:47,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1400. [2021-11-03 05:35:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1400 states, 1399 states have (on average 1.5096497498213008) internal successors, (2112), 1399 states have internal predecessors, (2112), 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 05:35:47,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1400 states to 1400 states and 2112 transitions. [2021-11-03 05:35:47,850 INFO L78 Accepts]: Start accepts. Automaton has 1400 states and 2112 transitions. Word has length 294 [2021-11-03 05:35:47,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:47,851 INFO L470 AbstractCegarLoop]: Abstraction has 1400 states and 2112 transitions. [2021-11-03 05:35:47,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 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 05:35:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1400 states and 2112 transitions. [2021-11-03 05:35:47,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-03 05:35:47,859 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:47,859 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:35:47,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:48,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:48,080 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:35:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:48,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1828138848, now seen corresponding path program 1 times [2021-11-03 05:35:48,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:48,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379082069] [2021-11-03 05:35:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:48,083 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:48,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:48,084 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:48,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 05:35:49,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:49,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 05:35:49,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:50,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-03 05:35:50,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 696 proven. 0 refuted. 0 times theorem prover too weak. 490 trivial. 0 not checked. [2021-11-03 05:35:51,293 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:51,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379082069] [2021-11-03 05:35:51,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379082069] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:51,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:51,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 05:35:51,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617733646] [2021-11-03 05:35:51,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 05:35:51,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:51,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 05:35:51,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 05:35:51,297 INFO L87 Difference]: Start difference. First operand 1400 states and 2112 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 05:35:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:35:52,314 INFO L93 Difference]: Finished difference Result 2914 states and 4408 transitions. [2021-11-03 05:35:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 05:35:52,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 358 [2021-11-03 05:35:52,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:35:52,329 INFO L225 Difference]: With dead ends: 2914 [2021-11-03 05:35:52,330 INFO L226 Difference]: Without dead ends: 1651 [2021-11-03 05:35:52,332 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 714 GetRequests, 712 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 05:35:52,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-03 05:35:52,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-03 05:35:52,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.5054545454545454) internal successors, (2484), 1650 states have internal predecessors, (2484), 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 05:35:52,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2484 transitions. [2021-11-03 05:35:52,420 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2484 transitions. Word has length 358 [2021-11-03 05:35:52,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:35:52,421 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2484 transitions. [2021-11-03 05:35:52,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 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 05:35:52,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2484 transitions. [2021-11-03 05:35:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-03 05:35:52,432 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:35:52,433 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:35:52,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 05:35:52,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:35:52,648 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:35:52,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:35:52,648 INFO L85 PathProgramCache]: Analyzing trace with hash -152438136, now seen corresponding path program 1 times [2021-11-03 05:35:52,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:35:52,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528989296] [2021-11-03 05:35:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:35:52,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:35:52,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:35:52,654 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:35:52,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 05:35:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:35:55,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-03 05:35:55,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:35:55,400 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 05:35:55,410 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 05:35:55,484 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:55,487 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 05:35:55,494 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:55,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 336 [2021-11-03 05:35:55,511 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 0 case distinctions, treesize of input 336 treesize of output 319 [2021-11-03 05:35:55,898 INFO L354 Elim1Store]: treesize reduction 1607, result has 2.8 percent of original size [2021-11-03 05:35:55,899 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 8 case distinctions, treesize of input 717 treesize of output 669 [2021-11-03 05:35:55,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:55,968 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 221 [2021-11-03 05:35:55,979 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 0 case distinctions, treesize of input 221 treesize of output 210 [2021-11-03 05:35:55,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:55,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:55,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:55,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:55,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 36 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 101 [2021-11-03 05:35:56,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 05:35:56,244 INFO L354 Elim1Store]: treesize reduction 340, result has 2.6 percent of original size [2021-11-03 05:35:56,245 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 4 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 05:35:56,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:35:56,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 13 [2021-11-03 05:35:56,316 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 37 treesize of output 25 [2021-11-03 05:35:56,321 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 22 treesize of output 10 [2021-11-03 05:35:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-03 05:35:57,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:35:59,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:59,068 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 181 [2021-11-03 05:35:59,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:59,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-03 05:35:59,262 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:59,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 393 [2021-11-03 05:35:59,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:59,276 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 510 [2021-11-03 05:35:59,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:59,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 687 [2021-11-03 05:35:59,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:59,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 744 [2021-11-03 05:35:59,337 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:59,342 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 861 [2021-11-03 05:35:59,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:35:59,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1038 [2021-11-03 05:35:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2021-11-03 05:35:59,990 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:35:59,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528989296] [2021-11-03 05:35:59,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528989296] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:35:59,991 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:35:59,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-03 05:35:59,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726184667] [2021-11-03 05:35:59,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:35:59,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:35:59,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:35:59,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:35:59,994 INFO L87 Difference]: Start difference. First operand 1651 states and 2484 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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 05:36:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:36:23,393 INFO L93 Difference]: Finished difference Result 3299 states and 4964 transitions. [2021-11-03 05:36:23,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 05:36:23,396 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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 392 [2021-11-03 05:36:23,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:36:23,407 INFO L225 Difference]: With dead ends: 3299 [2021-11-03 05:36:23,408 INFO L226 Difference]: Without dead ends: 1651 [2021-11-03 05:36:23,414 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 775 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:36:23,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-03 05:36:23,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 1651. [2021-11-03 05:36:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1650 states have (on average 1.5048484848484849) internal successors, (2483), 1650 states have internal predecessors, (2483), 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 05:36:23,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2483 transitions. [2021-11-03 05:36:23,502 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2483 transitions. Word has length 392 [2021-11-03 05:36:23,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:36:23,503 INFO L470 AbstractCegarLoop]: Abstraction has 1651 states and 2483 transitions. [2021-11-03 05:36:23,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 8 states have internal predecessors, (123), 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 05:36:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2483 transitions. [2021-11-03 05:36:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-03 05:36:23,514 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:36:23,514 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:36:23,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 05:36:23,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:36:23,740 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:36:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:36:23,740 INFO L85 PathProgramCache]: Analyzing trace with hash -924972090, now seen corresponding path program 1 times [2021-11-03 05:36:23,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:36:23,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620152511] [2021-11-03 05:36:23,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:36:23,743 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:36:23,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:36:23,747 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:36:23,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 05:36:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:36:26,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:36:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:36:26,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:36:26,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:36:26,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:36:26,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:36:26,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:36:26,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:36:26,387 INFO L354 Elim1Store]: treesize reduction 188, result has 13.8 percent of original size [2021-11-03 05:36:26,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 40 [2021-11-03 05:36:26,455 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:36:26,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:36:26,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:36:26,750 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-03 05:36:26,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 72 treesize of output 89 [2021-11-03 05:36:28,283 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 05:36:28,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 110 treesize of output 38 [2021-11-03 05:36:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2021-11-03 05:36:29,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:36:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 451 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2021-11-03 05:36:30,615 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:36:30,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620152511] [2021-11-03 05:36:30,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620152511] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:36:30,615 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:36:30,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-03 05:36:30,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836441637] [2021-11-03 05:36:30,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:36:30,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:36:30,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:36:30,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:36:30,618 INFO L87 Difference]: Start difference. First operand 1651 states and 2483 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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 05:37:16,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:37:16,222 INFO L93 Difference]: Finished difference Result 6246 states and 9434 transitions. [2021-11-03 05:37:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 05:37:16,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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 392 [2021-11-03 05:37:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:37:16,249 INFO L225 Difference]: With dead ends: 6246 [2021-11-03 05:37:16,249 INFO L226 Difference]: Without dead ends: 4605 [2021-11-03 05:37:16,252 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 784 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:37:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2021-11-03 05:37:16,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 1975. [2021-11-03 05:37:16,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1974 states have (on average 1.5405268490374873) internal successors, (3041), 1974 states have internal predecessors, (3041), 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 05:37:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3041 transitions. [2021-11-03 05:37:16,406 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3041 transitions. Word has length 392 [2021-11-03 05:37:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:37:16,406 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 3041 transitions. [2021-11-03 05:37:16,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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 05:37:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3041 transitions. [2021-11-03 05:37:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-03 05:37:16,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:37:16,417 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:37:16,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-03 05:37:16,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:37:16,640 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:37:16,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:37:16,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1676639032, now seen corresponding path program 1 times [2021-11-03 05:37:16,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:37:16,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704838701] [2021-11-03 05:37:16,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:37:16,642 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:37:16,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:37:16,643 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:37:16,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-03 05:37:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:37:18,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 05:37:18,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:37:19,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:37:19,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:37:19,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:37:19,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:19,395 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:19,504 INFO L354 Elim1Store]: treesize reduction 190, result has 12.8 percent of original size [2021-11-03 05:37:19,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 32 treesize of output 38 [2021-11-03 05:37:19,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:19,574 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:19,575 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 05:37:19,893 INFO L354 Elim1Store]: treesize reduction 850, result has 7.0 percent of original size [2021-11-03 05:37:19,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 70 treesize of output 87 [2021-11-03 05:37:22,506 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-03 05:37:22,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 108 treesize of output 36 [2021-11-03 05:37:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-03 05:37:22,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 05:37:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1445 backedges. 717 proven. 0 refuted. 0 times theorem prover too weak. 728 trivial. 0 not checked. [2021-11-03 05:37:23,678 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 05:37:23,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704838701] [2021-11-03 05:37:23,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704838701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 05:37:23,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:37:23,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-03 05:37:23,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966979418] [2021-11-03 05:37:23,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 05:37:23,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 05:37:23,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 05:37:23,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-03 05:37:23,681 INFO L87 Difference]: Start difference. First operand 1975 states and 3041 transitions. Second operand has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 05:38:09,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:38:09,353 INFO L93 Difference]: Finished difference Result 8331 states and 12766 transitions. [2021-11-03 05:38:09,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 05:38:09,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 392 [2021-11-03 05:38:09,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:38:09,394 INFO L225 Difference]: With dead ends: 8331 [2021-11-03 05:38:09,394 INFO L226 Difference]: Without dead ends: 6366 [2021-11-03 05:38:09,398 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 785 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-03 05:38:09,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6366 states. [2021-11-03 05:38:09,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6366 to 2807. [2021-11-03 05:38:09,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2806 states have (on average 1.6190306486101211) internal successors, (4543), 2806 states have internal predecessors, (4543), 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 05:38:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 4543 transitions. [2021-11-03 05:38:09,645 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 4543 transitions. Word has length 392 [2021-11-03 05:38:09,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:38:09,646 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 4543 transitions. [2021-11-03 05:38:09,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 32.0) internal successors, (224), 7 states have internal predecessors, (224), 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 05:38:09,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 4543 transitions. [2021-11-03 05:38:09,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2021-11-03 05:38:09,657 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:38:09,658 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:38:09,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-03 05:38:09,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 05:38:09,884 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 05:38:09,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:38:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash -729601146, now seen corresponding path program 1 times [2021-11-03 05:38:09,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 05:38:09,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797980433] [2021-11-03 05:38:09,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:38:09,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 05:38:09,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 05:38:09,890 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 05:38:09,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f2b49de-7d6f-4680-9f53-17439c4d68ef/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 05:38:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:38:20,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-03 05:38:20,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 05:40:16,757 WARN L207 SmtUtils]: Spent 1.94 m on a formula simplification. DAG size of input: 59 DAG size of output: 15 [2021-11-03 05:40:16,758 INFO L354 Elim1Store]: treesize reduction 177, result has 15.3 percent of original size [2021-11-03 05:40:16,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 9 case distinctions, treesize of input 5166 treesize of output 5178 [2021-11-03 05:40:16,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 5165 treesize of output 5129 [2021-11-03 05:40:16,915 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:40:16,918 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 79473 [2021-11-03 05:40:16,936 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 05:40:16,940 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 216788 [2021-11-03 05:40:16,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 05:40:16,967 INFO L190 IndexEqualityManager]: detected not equals via solver